MESON Chess Problem Database
Problem Display
PID: 210117 (2n1rq1b/p1Nr3b/B3P3/Q2Pp3/1p1k4/2N3B1/1K6/n3RR2 w - - 0 1)
Maleika, Gerhard
Springaren, 1988
#2
10 + 11
SOLUTION
- SOUND
- Sets
- 1...Qc5
- 2.Bf2#
- 1...Qd6
- 2.Bf2#
- 1...Qh6
- 2.Qxb4#
- 1...Qe7
- 2.Bf2#
- 1...Qg7
- 2.Bf2#
- 2.Qxb4#
- 1...Qf2+
- 2.Bxf2#
- 1...Qf3
- 2.Qxb4#
- 1...Qf4
- 2.Qxb4#
- 1...Qf5
- 2.Qxb4#
- 1...Qf6
- 2.Qxb4#
- 1...Qf7
- 2.Qxb4#
- 1...Qg8
- 2.Bf2#
- 2.Qxb4#
- 1...Rxd5
- 2.Qxd5#
- 1...Rd6
- 2.Qxb4#
- 1...Rde7
- 2.Qxb4#
- 1...Rg7
- 2.Bxe5#
- 1...Rxe6
- 2.Sxe6#
- 1...Ree7
- 2.Qxb4#
- 1...Be4
- 2.Rxe4#
- 1...Bf5
- 2.Bf2#
- 1...Bg8
- 2.Re4#
- 1...Bf6
- 2.Bf2#
- 1...Se7
- 2.Qxb4#
- 1...bxc3+
- 2.Qxc3#
- 1...Qc5
- Tries
- 1.Rd1+?
- 1...Bd3
- 2.Rxd3#
- 1...Ke3!
- 1...Bd3
- 1.Rf3?
- threat
- 2.Bf2#
- 1...bxc3+
- 2.Qxc3#
- 1...Qxf3
- 2.Qxb4#
- 1...Qh6
- 2.Qxb4#
- 1...Qf4
- 2.Qxb4#
- 1...e4
- 2.Se2#
- 2.Rd1#
- 1...Sc2!
- threat
- 1.Rf4+?
- 1...Qxf4
- 2.Qxb4#
- 1...Be4
- 2.Bf2#
- 2.Rexe4#
- 2.Rfxe4#
- 1...exf4
- 2.Bf2#
- 1...e4!
- 1...Qxf4
- 1.Rf6?
- threat
- 2.Bf2#
- 2.Bxe5#
- 1...bxc3+
- 2.Qxc3#
- 1...Qxf6
- 2.Qxb4#
- 1...Rxd5
- 2.Bf2#
- 2.Qxd5#
- 1...Rxe6
- 2.Sxe6#
- 2.Bf2#
- 1...Bxf6
- 2.Bf2#
- 1...Qd6
- 2.Bf2#
- 1...Qh6
- 2.Bxe5#
- 2.Qxb4#
- 1...Be4
- 2.Bf2#
- 2.Rxe4#
- 1...Sc2
- 2.Bxe5#
- 1...e4!
- threat
- 1.Rxf8?
- threat
- 2.Bf2#
- 2.Qxb4#
- 1...bxc3+
- 2.Qxc3#
- 1...Rxc7
- 2.Bf2#
- 1...Rxf8
- 2.Qxb4#
- 1...Rf7
- 2.Qxb4#
- 1...Bd3
- 2.Bf2#
- 1...Sb6
- 2.Bf2#
- 1...Sd6
- 2.Bf2#
- 1...b3
- 2.Bf2#
- 2.Qb4#
- 1...e4
- 2.Qxb4#
- 1...Sc2!
- threat
- 1.Qc5+?
- 1...Qxc5
- 2.Bf2#
- 1...Kxc5!
- 1...Qxc5
- 1.d6?
- threat
- 2.Qxb4#
- 2.Qd5#
- 1...Qf2+
- 2.Bxf2#
- 1...bxc3+
- 2.Qxc3#
- 1...Qxd6
- 2.Bf2#
- 1...Qxf1
- 2.Qd5#
- 1...Rxd6
- 2.Qxb4#
- 1...Rxc7
- 2.Qd5#
- 1...Sxd6
- 2.Qd5#
- 1...Qf3
- 2.Qxb4#
- 1...Bd3
- 2.Qd5#
- 1...Be4
- 2.Rxe4#
- 2.Qxb4#
- 1...Sc2
- 2.Qd5#
- 1...Se7
- 2.Qxb4#
- 1...b3
- 2.Qb4#
- 2.Qd5#
- 1...Sb6!
- threat
- 1.e7?
- threat
- 2.Se6#
- 2.Qxb4#
- 1...Qf2+
- 2.Bxf2#
- 1...bxc3+
- 2.Qxc3#
- 1...Qxe7
- 2.Bf2#
- 1...Qxf1
- 2.Se6#
- 1...Rdxe7
- 2.Qxb4#
- 1...Rexe7
- 2.Qxb4#
- 1...Qh6
- 2.Qxb4#
- 1...Qf5
- 2.Qxb4#
- 1...Qf6
- 2.Qxb4#
- 1...Qf7
- 2.Qxb4#
- 1...Qg8
- 2.Bf2#
- 2.Qxb4#
- 1...Rd6
- 2.Qxb4#
- 1...Bd3
- 2.Se6#
- 1...Bf5
- 2.Bf2#
- 2.Qxb4#
- 1...Bg8
- 2.Re4#
- 2.Qxb4#
- 1...Sc2
- 2.Se6#
- 1...Sb6
- 2.Se6#
- 1...Sd6
- 2.Se6#
- 1...b3
- 2.Se6#
- 2.Qb4#
- 1...Rxc7!
- threat
- 1.Rd1+?
- Keys
- 1.Rf5!
- threat
- 2.Bf2#
- 2.Re4#
- 1...bxc3+
- 2.Qxc3#
- 1...Qxf5
- 2.Qxb4#
- 1...Bxf5
- 2.Bf2#
- 1...Qh6
- 2.Re4#
- 2.Qxb4#
- 1...Sc2
- 2.Re4#
- 1...Sd6
- 2.Bf2#
- 1...e4
- 2.Rxe4#
- threat
- 1.Rf5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 19
- Sets
- Q(j);N_GUARD::B(E)
- Q(j);N_GUARD::QAR2(F),XP(b)
- Q(j);CHECK,N_GUARD::B(E),XQ(j)
- R(f);OGATE,XP(G)::QAR1(F),XR(f)
- R(f);S_CUTQ(j)::QAR2(F),XP(b)
- R(f);S_CUTB(k)::B(E),XP(d)
- R(i);XP(I)::S(J),XR(i)
- R(i);S_CUTQ(j)::QAR2(F),XP(b)
- B(g);N_GUARD::R1(A),XB(g)
- B(g);S_CUTQ(j)::B(E)
- B(g);N_GUARD::R1(A)
- B(k);S_CUTQ(j)::B(E)
- S(h);S_CUTQ(j)::QAR2(F),XP(b)
- P(b);CHECK,OGATE,XS(D)::QAB1(F),XP(b)
- Tries
- Try
- R(A);CHECK
- Vars
- B(g);N_GUARD,P_SPINB(g)::R1(A),XB(g)
- Refutation
- K(c);S_FLIGHT
- Try
- R(B);
- Threat
- B(E)
- Vars
- P(b);CHECK,OGATE,XS(D)::QAB1(F),XP(b)
- Q(j);N_GUARD,XR(B)::QAR2(F),XP(b)
- Q(j);N_GUARD::QAR2(F),XP(b)
- Refutation
- S(a);
- Try
- R(B);CHECK
- Vars
- Q(j);XR(B)::QAR2(F),XP(b)
- P(d);XR(B)::B(E)
- Refutation
- P(d);P_SPINP(d)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- P(b);CHECK,OGATE,XS(D)::QAB1(F),XP(b)
- Q(j);N_GUARD,XR(B)::QAR2(F),XP(b)
- B(k);XR(B)::B(E)
- Q(j);::B(E)
- S(a);::B(E),XP(d)
- Refutation
- P(d);
- Try
- R(B);XQ(j)
- Threat
- DUALS(2)
- Vars
- P(b);CHECK,OGATE,XS(D)::QAB1(F),XP(b)
- R(f);XS(J)::B(E)
- R(i);XR(B)::QAR2(F),XP(b)
- R(f);::QAR2(F),XP(b)
- B(g);::B(E)
- S(h);::B(E)
- P(d);::QAR2(F),XP(b)
- Refutation
- S(a);
- Try
- Q(F);CHECK
- Vars
- Q(j);SBLOCK,XQ(F)::B(E)
- Refutation
- K(c);S_FLIGHT,XQ(F)
- Try
- P(G);
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,N_GUARD::B(E),XQ(j)
- P(b);CHECK,OGATE,XS(D)::QAB1(F),XP(b)
- Q(j);N_GUARD,XP(G)::B(E)
- Q(j);XR(B)::QAR1(F)
- R(f);XP(G)::QAR2(F),XP(b)
- R(f);XS(J)::QAR1(F)
- S(h);XP(G)::QAR1(F)
- Q(j);::QAR2(F),XP(b)
- B(g);::QAR1(F)
- S(a);::QAR1(F)
- S(h);::QAR2(F),XP(b)
- Refutation
- S(h);
- Try
- P(I);
- Threat
- DUALS(2)
- Vars
- Q(j);CHECK,N_GUARD::B(E),XQ(j)
- P(b);CHECK,OGATE,XS(D)::QAB1(F),XP(b)
- Q(j);N_GUARD,XP(I)::B(E)
- Q(j);XR(B)::S(J)
- R(f);XP(I)::QAR2(F),XP(b)
- R(i);XP(I)::QAR2(F),XP(b)
- Q(j);::QAR2(F),XP(b)
- R(f);::QAR2(F),XP(b)
- B(g);::S(J)
- S(a);::S(J)
- S(h);::S(J)
- Refutation
- R(f);XS(J)
- Try
- Actual
- R(B);
- Threat
- DUALS(2)
- Vars
- P(b);CHECK,OGATE,XS(D)::QAB1(F),XP(b)
- Q(j);N_GUARD,XR(B)::QAR2(F),XP(b)
- B(g);XR(B)::B(E)
- S(a);::R1(A)
- S(h);::B(E)
- P(d);::R1(A),XP(d)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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