MESON Chess Problem Database
Problem Display
PID: 143548 (6b1/b1r1p3/3N3R/R2nkP2/1p3p2/2r3QK/3PNP2/BB2n3 w - - 0 1)
Prins, Hendrik
2nd Prize, idee & form, 2004-2005
#2
11 + 10
| 23 | Die Schwalbe | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Rc4
- 2.Sxc4#
- 1...Rc5
- 2.d4#
- 1...Rb7
- 2.Sc4#
- 1...Rd7
- 2.Sc4#
- 1...Be3
- 2.Qg7#
- 1...Bc5
- 2.Sc4#
- 1...Bb8
- 2.d4#
- 1...Be6
- 2.Rxe6#
- 1...Bf7
- 2.Sxf7#
- 1...Bh7
- 2.Sf7#
- 2.Re6#
- 1...Sd3
- 2.Qg7#
- 1...Sf3
- 2.Qxf4#
- 2.Qg7#
- 1...fxg3
- 2.f4#
- 1...Rc4
- Tries
- 1.Bxc3+?
- 1...Bd4
- 2.Bxd4#
- 2.Qxf4#
- 2.Qg7#
- 1...bxc3
- 2.Qxf4#
- 2.Qg7#
- 1...Rxc3!
- 1...Bd4
- 1.Bd3?
- threat
- 2.Qxf4#
- 2.Qg7#
- 1...Sxd3
- 2.Qg7#
- 1...fxg3
- 2.f4#
- 1...exd6
- 2.Qxf4#
- 1...Be6
- 2.Rxe6#
- 2.Qxf4#
- 1...e6
- 2.Qxf4#
- 1...Rc4
- 2.Sxc4#
- 2.Qg7#
- 1...Be3
- 2.Qg7#
- 1...Bc5
- 2.Sc4#
- 1...Sg2
- 2.Qg7#
- 1...Rc5!
- threat
- 1.Rc5?
- threat
- 2.Sc4#
- 2.d4#
- 1...Rxc5
- 2.d4#
- 1...Bxc5
- 2.Sc4#
- 1...exd6
- 2.d4#
- 1...Be6
- 2.Sc4#
- 2.Rxe6#
- 1...e6
- 2.Sc4#
- 1...Sd3
- 2.Qg7#
- 1...Sf3
- 2.Sc4#
- 2.Qxf4#
- 2.Qg7#
- 1...Sc2!
- threat
- 1.Qe3+?
- 1...fxe3
- 2.f4#
- 1...Bxe3!
- 1...fxe3
- 1.dxc3?
- threat
- 2.Qxf4#
- 2.Qg7#
- 1...Rxc3
- 2.Sc4#
- 1...fxg3
- 2.f4#
- 1...exd6
- 2.Qxf4#
- 1...Be6
- 2.Rxe6#
- 2.Qxf4#
- 1...e6
- 2.Qxf4#
- 1...Rc4
- 2.Sxc4#
- 2.Qg7#
- 1...Be3
- 2.Qg7#
- 1...Bc5
- 2.Sc4#
- 1...Sg2
- 2.Qg7#
- 1...Sd3
- 2.Qg7#
- 1...Rc5!
- threat
- 1.d3?
- threat
- 2.Qxf4#
- 2.Qg7#
- 1...Sxd3
- 2.Qg7#
- 1...fxg3
- 2.f4#
- 1...exd6
- 2.Qxf4#
- 1...Be6
- 2.Rxe6#
- 2.Qxf4#
- 1...e6
- 2.Qxf4#
- 1...Rc5
- 2.d4#
- 1...Rc4
- 2.Qg7#
- 1...Be3
- 2.Qg7#
- 1...Sg2
- 2.Qg7#
- 1...Bc5!
- threat
- 1.Bxc3+?
- Keys
- 1.f3!
- threat
- 2.Qxf4#
- 2.Qg7#
- 1...fxg3
- 2.f4#
- 1...exd6
- 2.Qxf4#
- 1...Be6
- 2.Rxe6#
- 2.Qxf4#
- 1...e6
- 2.Qxf4#
- 1...Rc5
- 2.d4#
- 1...Rc4
- 2.Sxc4#
- 2.Qg7#
- 1...Be3
- 2.Qg7#
- 1...Bc5
- 2.Sc4#
- 1...Sg2
- 2.Qg7#
- 1...Sd3
- 2.Qg7#
- threat
- 1.f3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- R(h);N_GUARD::S(J),XR(h)
- R(h);N_SPINS(e),S_CUTB(g)::P(C)
- R(h);N_GUARD::S(J)
- B(g);N_PINQ(F)::QAB(F)
- B(g);N_SPINS(e),S_CUTR(h)::S(J)
- B(g);N_GUARD::P(C)
- B(j);N_GUARD,P_PINP(I)::R1(K),XB(j)
- B(j);N_GUARD::S(J),XB(j)
- S(a);N_PINQ(F)::QAB(F)
- P(d);N_SPINP(d),OGATE,XQ(F)::P(E)
- Tries
- Try
- B(A);CHECK,N_SPINQ(F),XR(b)
- Refutation
- R(h);P_PINQ(F),XB(A)
- Try
- B(B);N_SPINQ(F)
- Threat
- DUALS(2)
- Vars
- S(a);XB(B)::QAB(F)
- P(d);N_SPINP(d),OGATE,XQ(F)::P(E)
- P(i);XS(J)::QAB1(F),XP(d)
- P(i);::QAB1(F),XP(d)
- B(g);::QAB(F)
- B(g);N_SPINS(e),S_CUTR(h)::S(J)
- S(a);::QAB(F)
- Refutation
- R(h);N_SPINS(e)
- Try
- R(H);
- Threat
- DUALS(2)
- Vars
- R(h);N_SPINS(e),XR(H)::P(C)
- B(g);N_SPINS(e),XR(H)::S(J)
- P(i);XS(J)::P(C)
- P(i);::S(J)
- S(a);N_PINQ(F)::QAB(F)
- Refutation
- S(a);
- Try
- Q(F);CHECK,N_PINP(d)
- Vars
- P(d);OGATE,XQ(F)::P(E)
- Refutation
- B(g);XQ(F)
- Try
- P(C);N_SPINQ(F),XR(b)
- Threat
- DUALS(2)
- Vars
- R(h);N_GUARD,P_PINQ(F),P_SPINR(h),XP(C)::S(J)
- P(d);N_SPINP(d),OGATE,XQ(F)::P(E)
- P(i);XS(J)::QAB1(F),XP(d)
- P(i);::QAB1(F),XP(d)
- B(g);::QAB(F)
- B(g);N_SPINS(e),S_CUTR(h)::S(J)
- S(a);::QAB(F)
- Refutation
- R(h);N_SPINS(e)
- Try
- P(C);N_SPINQ(F)
- Threat
- DUALS(2)
- Vars
- S(a);XP(C)::QAB(F)
- P(d);N_SPINP(d),OGATE,XQ(F)::P(E)
- P(i);XS(J)::QAB1(F),XP(d)
- P(i);::QAB1(F),XP(d)
- R(h);N_SPINS(e),S_CUTB(g)::P(C)
- R(h);::QAB(F)
- B(g);::QAB(F)
- S(a);::QAB(F)
- Refutation
- B(g);N_SPINS(e)
- Try
- Actual
- P(E);N_SPINQ(F)
- Threat
- DUALS(2)
- Vars
- P(d);N_SPINP(d),OGATE,XQ(F)::P(E)
- P(i);XS(J)::QAB1(F),XP(d)
- P(i);::QAB1(F),XP(d)
- R(h);N_SPINS(e),S_CUTB(g)::P(C)
- B(g);::QAB(F)
- B(g);N_SPINS(e),S_CUTR(h)::S(J)
- S(a);::QAB(F)
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).