MESON Chess Problem Database
Problem Display
PID: 138648 (B7/5Q2/2rpNp2/3kbn1R/K7/1P6/4N1P1/4R3 w - - 0 1)
Bayer, Konrad
Schachaufgaben, 1882
#2
9 + 6
| 3530 | Het Half Pin Thema (II) | 1947 |
SOLUTION
- SOUND
- Sets
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.Sc3#
- 1...Sg3
- 2.Sc3#
- 2.S2f4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Se7
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ba1
- Tries
- 1.Kb4?
- threat
- 2.Sc5#
- 2.Sg5#
- 1...Bc3+
- 2.Sxc3#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- threat
- 1.Ka5?
- 1...Bc3+
- 2.Sxc3#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.Sc3#
- 1...Sg3
- 2.Sc3#
- 2.S2f4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Se7
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- 1...Bc3+
- 1.Sf8+?
- 1...Kc5
- 2.Sd7#
- 1...Ke4!
- 1...Kc5
- 1.Bb7?
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.Sc3#
- 1...Sg3
- 2.Sc3#
- 2.S2f4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Se7
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- 1...Ba1
- 1.Qg6?
- 1...Ke4
- 2.S2f4#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.S2f4#
- 1...Sg3
- 2.S2f4#
- 1...Sd4
- 2.S2f4#
- 1...Sh4
- 2.S2f4#
- 1...Sh6
- 2.S2f4#
- 1...Se7
- 2.S2f4#
- 1...Sg7
- 2.S2f4#
- 1...Kxe6!
- 1...Ke4
- 1.Qe8?
- threat
- 2.Bxc6#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se7
- 2.S2f4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- threat
- 1.Qg8?
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.Sc3#
- 1...Sg3
- 2.Sc3#
- 2.S2f4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Se7
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- 1...Ba1
- 1.Qxf6?
- 1...Bxf6
- 2.S2f4#
- 1...Se3
- 2.Sc3#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Sg3
- 2.Sc3#
- 2.S2f4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Se7
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- 1...Bxf6
- 1.Qd7?
- threat
- 2.Bxc6#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Se7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- threat
- 1.Qe7?
- 1...Sxe7
- 2.S2f4#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.Sc3#
- 1...Sg3
- 2.Sc3#
- 2.S2f4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- 1...Sxe7
- 1.g3?
- 1...Bxg3
- 2.Sc3#
- 1...Sxg3
- 2.Sc3#
- 2.S2f4#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.Sc3#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Se7
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- 1...Bxg3
- 1.g4?
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.Sc3#
- 1...Sg3
- 2.Sc3#
- 2.S2f4#
- 1...Sd4
- 2.Sc3#
- 2.S2f4#
- 1...Sh4
- 2.Sc3#
- 2.S2f4#
- 1...Sh6
- 2.Sc3#
- 2.S2f4#
- 1...Se7
- 2.Sc3#
- 2.S2f4#
- 1...Sg7
- 2.Sc3#
- 2.S2f4#
- 1...Ke4!
- 1...Ba1
- 1.Kb4?
- Keys
- 1.Qh7!
- 1...Ke4
- 2.S2f4#
- 1...Kxe6
- 2.Sf4#
- 1...Ba1
- 2.S2f4#
- 1...Bb2
- 2.S2f4#
- 1...Bh2
- 2.Sc3#
- 1...Bc3
- 2.Sxc3#
- 2.S2f4#
- 1...Bg3
- 2.Sc3#
- 1...Bd4
- 2.S2f4#
- 1...Bf4
- 2.Sc3#
- 2.S2xf4#
- 1...Se3
- 2.S2f4#
- 1...Sg3
- 2.S2f4#
- 1...Sd4
- 2.S2f4#
- 1...Sh4
- 2.S2f4#
- 1...Sh6
- 2.S2f4#
- 1...Se7
- 2.S2f4#
- 1...Sg7
- 2.S2f4#
- 1...Ke4
- 1.Qh7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 8
- REMOVED MATES = 0
- Sets
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Tries
- Try
- K(E);P-FLIGHT
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,N_GUARD,P_SPINS(c)::S(B),XB(b)
- B(b);N_GUARD,P_SPINS(c)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- K(E);P-FLIGHT
- Vars
- B(b);CHECK,N_GUARD,P_SPINS(c)::S(B),XB(b)
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- S(G);CHECK
- Vars
- K(a);N_SPINR(d),P-FLIGHT::S(G)
- Refutation
- K(a);S_FLIGHT
- Try
- B(I);
- Vars
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(H);
- Vars
- K(a);P_SPINS(c),S_FLIGHT::R(A)+S(B)
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Refutation
- K(a);N_SPINR(d),P_SPINP(f),S_FLIGHT,XS(G)
- Try
- Q(H);
- Threat
- B(I),XR(d)
- Vars
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(H);
- Vars
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(H);XP(f)
- Vars
- B(b);N_GUARD,P_SPINS(c),XQ(H)::S(B)
- S(c);P_SPINB(b)::S(B)
- B(b);N_GUARD,P_SPINS(c)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- Q(H);P_PINP(e)
- Threat
- B(I),XR(d)
- Vars
- B(b);N_GUARD,P_SPINS(c)::S(B)
- Refutation
- K(a);N_SPINP(e),S_FLIGHT
- Try
- Q(H);
- Vars
- S(c);P_SPINB(b),XQ(H)::S(B)
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- P(C);
- Vars
- B(b);N_GUARD,P_SPINS(c),XP(C)::S(B)
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- P(C);
- Vars
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
- Refutation
- K(a);S_FLIGHT
- Try
- Actual
- Q(H);
- Vars
- K(a);P_SPINS(c),S_FLIGHT::R(A)+S(B)
- K(a);N_SPINR(d),S_FLIGHT,XS(G)::S(B)
- B(b);N_GUARD,P_SPINS(c)::S(B)
- S(c);P_SPINB(b)::S(B)
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).