MESON Chess Problem Database
Problem Display
PID: 30793 (8/4p3/1N1RbP1p/1KB1kpnQ/8/3PP3/5NB1/8 w - - 0 1)
Courtenay, DS
Dubuque Chess Journal, 1870
#2
10 + 6
| 3391 | Het Half Pin Thema | 1947 |
SOLUTION
- SOUND
- Sets
- 1...Kxf6
- 2.Bd4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bc4+
- 2.Sxc4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bd7+
- 2.Sxd7#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Kxf6
- Tries
- 1.Kb4?
- 1...Kxf6
- 2.Bd4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bc4
- 2.Sxc4#
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bd7
- 2.Sc4#
- 2.Sxd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Kxf6
- 1.Ka5?
- 1...Kxf6
- 2.Bd4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bc4
- 2.Sxc4#
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bd7
- 2.Sc4#
- 2.Sxd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Kxf6
- 1.Sc4+?
- 1...Kxf6
- 2.Bd4#
- 1...Bxc4+!
- 1...Kxf6
- 1.Bf1?
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bd4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Bh1?
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bd4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Bf3?
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bd4#
- 1...Sxf3
- 2.Sg4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Bd5?
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bd4#
- 1...Bxd5
- 2.Sd7#
- 2.d4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.Sc4#
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 2.Rxe6#
- 1...Bf7
- 2.Sc4#
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sc4#
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 2.Rxe6#
- 1...Se4
- 2.Sg4#
- 2.Rxe6#
- 1...Sf7
- 2.Sg4#
- 2.Rxe6#
- 1...Sh7
- 2.Sg4#
- 2.Rxe6#
- 1...f4!
- 1...Bd7+
- 1.Bc6?
- 1...Bc4+
- 2.Sxc4#
- 1...Kxf6
- 2.Bd4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bd7
- 2.Sc4#
- 2.Sxd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Bb7?
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bd4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Ba8?
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bd4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Ba3?
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bb2#
- 1...exd6
- 2.Bb2#
- 1...exf6
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Bb4?
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bc3#
- 1...exd6
- 2.Bc3#
- 1...exf6
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Rd5+?
- 1...Kxf6
- 2.Bd4#
- 1...Bxd5!
- 1...Kxf6
- 1.Rc6?
- threat
- 2.Bd4#
- 1...Bc4+
- 2.Sxc4#
- 1...Kxf6
- 2.Bd4#
- 1...Sf3
- 2.Sg4#
- 1...f4!
- threat
- 1.Rxe6+?
- 1...Sxe6
- 2.Sg4#
- 2.Sd7#
- 1...Kxe6!
- 1...Sxe6
- 1.Qg6?
- threat
- 2.d4#
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Sf3!
- threat
- 1.Qh2+?
- 1...f4
- 2.Qxf4#
- 1...Kxf6!
- 1...f4
- 1.Qxg5?
- threat
- 2.Sg4#
- 2.d4#
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...h5
- 2.d4#
- 1...hxg5!
- threat
- 1.f7?
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kf6
- 2.Bd4#
- 1...Bxf7
- 2.Sd7#
- 2.d4#
- 1...Sxf7
- 2.Sg4#
- 1...exd6
- 2.Bd4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Sh3
- 2.Sg4#
- 1...Se4
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4!
- 1...Bc4+
- 1.Kb4?
- Keys
- 1.Bh3!
- 1...Bc4+
- 2.Sxc4#
- 1...Bd7+
- 2.Sxd7#
- 1...Kxf6
- 2.Bd4#
- 1...Sxh3
- 2.Sg4#
- 1...exd6
- 2.Bd4#
- 1...exf6
- 2.d4#
- 1...Sf3
- 2.Sg4#
- 1...Ba2
- 2.Sd7#
- 2.d4#
- 1...Bb3
- 2.Sd7#
- 2.d4#
- 1...Bd5
- 2.Sd7#
- 2.d4#
- 1...Bf7
- 2.Sd7#
- 2.d4#
- 1...Bc8
- 2.Sc4#
- 2.d4#
- 1...Bg8
- 2.Sd7#
- 2.d4#
- 1...Se4
- 2.Sg4#
- 1...Sf7
- 2.Sg4#
- 1...Sh7
- 2.Sg4#
- 1...f4
- 2.Rxe6#
- 1...Bc4+
- 1.Bh3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- B(d);CHECK,N_GUARD::S(H),XB(d)
- S(c);P_SPINP(b)::S(A)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- K(E);P-FLIGHT
- Vars
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- S(H);CHECK
- Vars
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- Refutation
- B(d);CHECK,XS(H)
- Try
- B(B);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- B(B);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- B(B);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- S(c);P_SPINP(b),XB(B)::S(A)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- B(B);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- Refutation
- P(b);P_SPINS(c)
- Try
- B(B);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- B(B);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- B(B);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- B(F);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- B(F);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- R(I);CHECK
- Vars
- K(a);S_FLIGHT,XP(J)::B(F)
- Refutation
- B(d);XR(I)
- Try
- R(I);
- Threat
- B(F)
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- R(I);CHECK,XB(d)
- Refutation
- K(a);P-FLIGHT,XR(I)
- Try
- Q(G);
- Threat
- P(C)
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- Refutation
- S(c);
- Try
- Q(G);CHECK
- Vars
- P(b);P_SPINP(b)::QAB1(G),XP(b)
- Refutation
- K(a);P_SPINB(d),S_FLIGHT,XP(J)
- Try
- Q(G);P_PINP(b),XS(c)
- Threat
- DUALS(2)
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- P(e);::P(C)
- Refutation
- P(e);N_SPINP(b),XQ(G)
- Try
- P(J);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT::B(F)
- S(c);P_SPINP(b),XP(J)::S(A)
- P(f);SBLOCK,XR(I)::B(F)
- S(c);P_SPINP(b)::S(A)
- Refutation
- P(b);P_SPINS(c)
- Try
- Actual
- B(B);
- Vars
- B(d);CHECK,N_GUARD::S(H),XB(d)
- K(a);P_SPINB(d),S_FLIGHT,XP(J)::B(F)
- S(c);P_SPINP(b),XB(B)::S(A)
- P(f);SBLOCK,XR(I)::B(F)
- P(f);SBLOCK,XP(J)::P(C)
- S(c);P_SPINP(b)::S(A)
- P(b);P_SPINS(c)::R1(I),XB(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).