MESON Chess Problem Database
Problem Display
PID: 60438 (1Q1R2K1/2N1pR1p/n7/2Bpk1N1/7r/1q3pPb/3P1Pp1/1B1n2b1 w - - 0 1)
Prins, Hendrik
Probleemblad, 2005
#2
11 + 12
SOLUTION
- SOUND
- Sets
- 1...Qa2
- 2.Sxf3#
- 2.Sxa6#
- 1...Qc2
- 2.Sxa6#
- 2.Rxd5#
- 1...Qa4
- 2.Sxf3#
- 2.Sxa6#
- 2.Rxd5#
- 1...Qc4
- 2.Sxf3#
- 2.Sxa6#
- 1...Qxb1
- 2.Rxd5#
- 1...Qb2
- 2.Sxf3#
- 2.Rxd5#
- 1...Qa3
- 2.Sxa6#
- 2.Rxd5#
- 1...Qc3
- 2.Sxa6#
- 2.Rxd5#
- 1...Qd3
- 2.Sxa6#
- 1...Qe3
- 2.Sxa6#
- 2.Rxd5#
- 1...Qb4
- 2.Sxf3#
- 2.Rxd5#
- 1...Qb5
- 2.Sxf3#
- 2.Rxd5#
- 1...Qb6
- 2.Sxf3#
- 2.Rxd5#
- 1...Qb7
- 2.Sxf3#
- 1...Qxb8
- 2.Sxf3#
- 1...Rc4
- 2.Rxd5#
- 1...Rf4
- 2.gxf4#
- 1...Rg4
- 2.Rf5#
- 1...Rh5
- 2.d4#
- 1...Rh6
- 2.d4#
- 1...Bg4
- 2.d4#
- 1...Bf5
- 2.Rxf5#
- 1...Sc3
- 2.Sxf3#
- 1...Se3
- 2.Sxf3#
- 1...Sb4
- 2.Sb5#
- 2.Sxd5#
- 2.Sa6#
- 2.Sce6#
- 2.Sa8#
- 2.Se8#
- 1...Sxc5
- 2.Sb5#
- 1...Sxc7
- 2.Qxc7#
- 1...Qa2
- Tries
- 1.Sb5+?
- 1...Sc7
- 2.Qxc7#
- 1...Sxb8!
- 1...Sc7
- 1.Bd3?
- threat
- 2.Sxf3#
- 1...Qxd3
- 2.Sxa6#
- 1...Sxc7
- 2.Qxc7#
- 1...Rf4
- 2.gxf4#
- 1...Rg4
- 2.Rf5#
- 1...Bg4!
- threat
- 1.Be3?
- threat
- 2.Sxf3#
- 1...Qxb1
- 2.Rxd5#
- 1...Qxe3
- 2.Rxd5#
- 1...Sxc7
- 2.Qxc7#
- 1...Qc2
- 2.Rxd5#
- 1...Qd3
- 2.Sxa6#
- 1...Rf4
- 2.gxf4#
- 1...Rg4
- 2.Rf5#
- 1...Bg4
- 2.d4#
- 1...Bd7!
- threat
- 1.Bb6?
- threat
- 2.Sxa6#
- 1...Qxb6
- 2.Sxf3#
- 2.Rxd5#
- 1...Sxc7
- 2.Qxc7#
- 1...Sc5
- 2.Sb5#
- 2.Sce6#
- 1...Qc2
- 2.Rxd5#
- 1...Qc4
- 2.Sxf3#
- 1...Qa3
- 2.Rxd5#
- 1...Qc3
- 2.Rxd5#
- 1...Qb4
- 2.Sxf3#
- 2.Rxd5#
- 1...Rc4
- 2.Rxd5#
- 1...Rh6
- 2.d4#
- 1...Sb4
- 2.Sb5#
- 2.Sxd5#
- 2.Sa6#
- 2.Sce6#
- 2.Sa8#
- 2.Se8#
- 1...Sxb8!
- threat
- 1.Rxe7+?
- 1...Be6+
- 2.Rxe6#
- 1...Kf6!
- 1...Be6+
- 1.Qxb3?
- threat
- 2.Sxf3#
- 2.Rxd5#
- 2.Qxd5#
- 1...Rc4
- 2.Sxf3#
- 2.Rxd5#
- 1...Rd4
- 2.Sxf3#
- 1...Rf4
- 2.Rxd5#
- 2.Qxd5#
- 2.gxf4#
- 1...Rg4
- 2.Rf5#
- 2.Rxd5#
- 2.Qxd5#
- 1...Bg4
- 2.Rxd5#
- 2.Qxd5#
- 2.d4#
- 1...Be6
- 2.Sxf3#
- 1...Bd7
- 2.Sxf3#
- 2.Qxd5#
- 1...Sc3
- 2.Sxf3#
- 1...Se3
- 2.Sxf3#
- 1...Sb4
- 2.Sxf3#
- 1...d4
- 2.Sxf3#
- 2.Rd5#
- 2.Qd5#
- 1...e6
- 2.Sxf3#
- 1...Sxc7!
- threat
- 1.d3?
- threat
- 2.Sxf3#
- 1...Qxd3
- 2.Sxa6#
- 1...Sxc7
- 2.Qxc7#
- 1...Rf4
- 2.gxf4#
- 1...Bg4
- 2.d4#
- 1...Rg4!
- threat
- 1.gxh4?
- threat
- 2.d4#
- 1...Sxc5
- 2.Sb5#
- 1...Bf5
- 2.Rxf5#
- 1...Qa4
- 2.Sxf3#
- 2.Sxa6#
- 2.Rxd5#
- 1...Qc4
- 2.Sxf3#
- 2.Sxa6#
- 1...Qb2
- 2.Sxf3#
- 2.Rxd5#
- 1...Qc3
- 2.Sxa6#
- 2.Rxd5#
- 1...Qd3
- 2.Sxa6#
- 1...Qe3
- 2.Sxa6#
- 2.Rxd5#
- 1...Qb4
- 2.Sxf3#
- 2.Rxd5#
- 1...d4
- 2.Bxd4#
- 1...Bxf2!
- threat
- 1.Sb5+?
- Keys
- 1.g4!
- threat
- 2.Rf5#
- 2.d4#
- 1...Qxb1
- 2.Rxd5#
- 2.d4#
- 1...Rxg4
- 2.Rf5#
- 1...Bxf2
- 2.Rf5#
- 1...Bxg4
- 2.d4#
- 1...Sxc5
- 2.Sb5#
- 1...Qc2
- 2.Sxa6#
- 2.Rxd5#
- 2.d4#
- 1...Qa4
- 2.Sxf3#
- 2.Sxa6#
- 2.Rf5#
- 2.Rxd5#
- 1...Qc4
- 2.Sxf3#
- 2.Sxa6#
- 2.Rf5#
- 1...Qb2
- 2.Sxf3#
- 2.Rf5#
- 2.Rxd5#
- 1...Qc3
- 2.Sxa6#
- 2.Rf5#
- 2.Rxd5#
- 1...Qd3
- 2.Sxa6#
- 1...Qe3
- 2.Sxa6#
- 2.Rf5#
- 2.Rxd5#
- 1...Qb4
- 2.Sxf3#
- 2.Rf5#
- 2.Rxd5#
- 1...Se3
- 2.Sxf3#
- 2.d4#
- 1...d4
- 2.Bxd4#
- 1...e6
- 2.d4#
- threat
- 1.g4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 11
- Sets
- Q(d);N_GUARD,XB(A)::R1(J),XP(h)
- Q(d);N_GUARD::QAB(I)+S(G),XS(j)
- Q(d);N_GUARD::S(F),XP(e)
- Q(d);N_GUARD,P_PINR(J),XQ(I)::S(F),XP(e)
- R(g);S_CUTQ(d)::R1(J),XP(h)
- R(g);OGATE::P(D),XR(g)
- R(g);P_PINS(F),S_CUTB(f)::R1(H)
- R(g);N_GUARD::P(B)
- B(f);S_CUTR(g)::P(B)
- B(f);N_GUARD::R1(H),XB(f)
- S(a);S_CUTQ(d)::S(F),XP(e)
- S(j);N_GUARD,XB(E)::QAB(I)+S(G)
- S(j);OGATE,P_SPINS(j),XS(G)::QAB(I),XS(j)
- Tries
- Try
- S(G);CHECK
- Vars
- S(j);N_GUARD,P_SPINS(j)::QAB(I),XS(j)
- Refutation
- S(j);XQ(I)
- Try
- B(A);
- Threat
- S(F),XP(e)
- Vars
- Q(d);N_GUARD,XB(A)::QAB(I)+S(G),XS(j)
- S(j);OGATE,P_SPINS(j),XS(G)::QAB(I),XS(j)
- R(g);OGATE::P(D),XR(g)
- R(g);P_PINS(F),S_CUTB(f)::R1(H)
- Refutation
- B(f);
- Try
- B(E);
- Threat
- S(F),XP(e)
- Vars
- Q(d);N_GUARD,XB(A)::R1(J),XP(h)
- Q(d);N_GUARD,XB(E)::R1(J),XP(h)
- S(j);OGATE,P_SPINS(j),XS(G)::QAB(I),XS(j)
- Q(d);N_GUARD::R1(J),XP(h)
- Q(d);N_GUARD::QAB(I)+S(G),XS(j)
- R(g);OGATE::P(D),XR(g)
- R(g);P_PINS(F),S_CUTB(f)::R1(H)
- B(f);S_CUTR(g)::P(B)
- Refutation
- B(f);
- Try
- B(E);
- Threat
- QAB(I)+S(G),XS(j)
- Vars
- S(j);OGATE,P_SPINS(j),XS(G)::QAB(I),XS(j)
- Q(d);N_GUARD::R1(J),XP(h)
- Q(d);N_GUARD::S(F),XP(e)
- R(g);S_CUTQ(d)::R1(J),XP(h)
- R(g);N_GUARD::P(B)
- Refutation
- S(j);XQ(I)
- Try
- R(H);CHECK,XP(k)
- Vars
- B(f);CHECK,N_GUARD,P_SPINB(f)::R1(H),XB(f)
- Refutation
- K(i);S_FLIGHT
- Try
- Q(I);XQ(d)
- Threat
- DUALS(3)
- Vars
- R(g);::S(F),XP(e)
- B(f);P_PINR(H)::S(F),XP(e)
- S(a);::S(F),XP(e)
- S(j);::S(F),XP(e)
- P(k);::S(F),XP(e)
- Refutation
- S(j);XS(G)
- Try
- P(B);
- Threat
- S(F),XP(e)
- Vars
- Q(d);N_GUARD,XP(B)::QAB(I)+S(G),XS(j)
- S(j);OGATE,P_SPINS(j),XS(G)::QAB(I),XS(j)
- R(g);OGATE::P(D),XR(g)
- B(f);S_CUTR(g)::P(B)
- Refutation
- R(g);P_PINS(F)
- Try
- P(D);XR(g)
- Threat
- P(B)
- Vars
- S(j);N_GUARD,XB(E)::QAB(I)+S(G)
- B(f);N_GUARD::R1(H),XB(f)
- Q(d);N_GUARD::QAB(I)+S(G),XS(j)
- P(h);P_PINR(H)::B(E),XP(h)
- Refutation
- B(b);XP(C)
- Try
- Actual
- P(D);
- Threat
- DUALS(2)
- Vars
- R(g);P_PINS(F),XP(D)::R1(H)
- B(b);XP(C)::R1(H)
- B(f);XP(D)::P(B)
- S(j);N_GUARD,XB(E)::QAB(I)+S(G)
- Q(d);N_GUARD::QAB(I)+S(G),XS(j)
- P(h);P_PINR(H)::B(E),XP(h)
- P(k);::P(B)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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