MESON Chess Problem Database
Problem Display
PID: 143916 (3n2r1/5R2/5Bp1/6PP/QNqb1kpK/6N1/5PPp/5R1r w - - 0 1)
Segers, Marcel
British Chess Magazine, 1992
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Qxf1
- 2.Sd5#
- 1...Qa2
- 2.Sd3#
- 1...Qe2
- 2.Sd5#
- 1...Qd3
- 2.Sxd3#
- 2.Sd5#
- 1...Qd5
- 2.Sd3#
- 2.Sxd5#
- 1...Qa6
- 2.Sd5#
- 1...Qe6
- 2.Sd3#
- 1...Qxf7
- 2.Sd3#
- 1...Qc1
- 2.Sd3#
- 2.Sd5#
- 1...Qc2
- 2.Sd5#
- 1...Qc3
- 2.Sd5#
- 1...Qc5
- 2.Sd3#
- 1...Qc6
- 2.Sd3#
- 1...Qc7
- 2.Sd3#
- 2.Sd5#
- 1...Qc8
- 2.Sd3#
- 2.Sd5#
- 1...Ba1
- 2.Sd3#
- 2.Sd5#
- 1...Bb2
- 2.Sd3#
- 2.Sd5#
- 1...Bxf2
- 2.Sd5#
- 1...Bc3
- 2.Sd3#
- 2.Sd5#
- 1...Be3
- 2.Sd3#
- 2.Sd5#
- 1...Bc5
- 2.Sd3#
- 2.Sd5#
- 1...Be5
- 2.Sd3#
- 2.Sd5#
- 1...Bb6
- 2.Sd3#
- 2.Sd5#
- 1...Bxf6
- 2.Sd3#
- 1...Ba7
- 2.Sd3#
- 2.Sd5#
- 1...Se6
- 2.Bxd4#
- 1...Qxf1
- Tries
- 1.Bxd4+?
- 1...Qxf7
- 2.Sd3#
- 1...Sxf7!
- 1...Qxf7
- 1.Bg7+?
- 1...Qxf7
- 2.Sd3#
- 1...Bf6
- 2.Sd3#
- 1...Sxf7!
- 1...Qxf7
- 1.Bxd8+?
- 1...Qxf7
- 2.Sd3#
- 1...Bf6
- 2.Sd3#
- 1...Ke5!
- 1...Qxf7
- 1.Bh8+?
- 1...Qxf7
- 2.Sd3#
- 1...Bf6
- 2.Sd3#
- 1...Sxf7!
- 1...Qxf7
- 1.Re1?
- threat
- 2.Be5#
- 2.Re4#
- 1...Qxf7
- 2.Sd3#
- 2.Re4#
- 1...Bxf2
- 2.Sd3#
- 2.Sd5#
- 2.Be5#
- 1...Bxf6
- 2.Sd3#
- 2.Sd5#
- 2.Rxf6#
- 1...Sxf7
- 2.Re4#
- 1...Qe2
- 2.Sd5#
- 1...Qd3
- 2.Sxd3#
- 2.Sd5#
- 2.Be5#
- 1...Qd5
- 2.Sd3#
- 2.Sxd5#
- 2.Be5#
- 1...Qe6
- 2.Sd3#
- 2.Be5#
- 1...Qc2
- 2.Sd5#
- 2.Be5#
- 1...Qc6
- 2.Sd3#
- 2.Be5#
- 1...Re8
- 2.Be5#
- 1...Ba1
- 2.Sd3#
- 2.Sd5#
- 2.Be5#
- 1...Bb2
- 2.Sd3#
- 2.Sd5#
- 2.Be5#
- 1...Bc3
- 2.Sd3#
- 2.Sd5#
- 2.Be5#
- 1...Be3
- 2.Sd3#
- 2.Sd5#
- 2.fxe3#
- 1...Bc5
- 2.Sd3#
- 2.Sd5#
- 2.Be5#
- 1...Be5
- 2.Sd3#
- 2.Sd5#
- 2.Bxe5#
- 1...Bb6
- 2.Sd3#
- 2.Sd5#
- 2.Be5#
- 1...Ba7
- 2.Sd3#
- 2.Sd5#
- 2.Be5#
- 1...Rxe1!
- threat
- 1.Qd1?
- threat
- 2.Qxg4#
- 1...Bxf2
- 2.Qd2#
- 1...Bxf6
- 2.Qd6#
- 1...Qe2
- 2.Sd5#
- 1...Qe6
- 2.Sd3#
- 1...Qc8
- 2.Sd3#
- 2.Sd5#
- 2.Qxd4#
- 1...gxh5!
- threat
- 1.Qe8?
- threat
- 2.Be5#
- 2.Qe4#
- 1...Qxf7
- 2.Sd3#
- 2.Qe4#
- 1...Bxf2
- 2.Rxf2#
- 2.Qe5#
- 1...Bxf6
- 2.Rxf6#
- 2.Qe3#
- 1...Sxf7
- 2.Qe4#
- 1...Qe2
- 2.Sd5#
- 2.Be5#
- 1...Qd3
- 2.Sxd3#
- 2.Sd5#
- 2.Be5#
- 1...Qd5
- 2.Sd3#
- 2.Sxd5#
- 2.Be5#
- 1...Qe6
- 2.Sd3#
- 1...Qc2
- 2.Sd5#
- 2.Be5#
- 1...Qc6
- 2.Sd3#
- 2.Be5#
- 1...Ba1
- 2.Be5#
- 2.Qe3#
- 1...Bb2
- 2.Be5#
- 2.Qe3#
- 1...Bc3
- 2.Be5#
- 2.Qe3#
- 1...Be3
- 2.Be5#
- 2.Qxe3#
- 2.Qe5#
- 2.fxe3#
- 1...Bc5
- 2.Be5#
- 2.Qe5#
- 1...Be5
- 2.Bxe5#
- 2.Qxe5#
- 1...Bb6
- 2.Be5#
- 2.Qe5#
- 1...Ba7
- 2.Be5#
- 2.Qe5#
- 1...Se6
- 2.Bxd4#
- 1...Rxe8!
- threat
- 1.Bxd4+?
- Keys
- 1.Qd7!
- threat
- 2.Qxg4#
- 1...Bxf2
- 2.Qd2#
- 1...Bxf6
- 2.Qd6#
- 1...gxh5
- 2.Qf5#
- 1...Qe2
- 2.Sd5#
- 1...Qe6
- 2.Sd3#
- 1...Qc8
- 2.Sd3#
- 2.Sd5#
- 2.Qxd4#
- 1...Se6
- 2.Bxd4#
- threat
- 1.Qd7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- Q(c);N_GUARD,XR(A)::S(F)
- Q(c);N_GUARD::S(F)
- Q(c);N_GUARD,XR(K)::S(F)
- B(d);P_PINS(D),P_SPINB(d),S_CUTQ(c),XP(B)::S(F)
- B(d);P_PINP(H),P_SPINB(d),S_CUTQ(c),XB(J)::S(F)
- S(h);N_GUARD,S_CUTQ(c)::R(K)+B(J),XB(d)
- Tries
- Try
- B(J);CHECK,XB(d)
- Vars
- Q(c);XR(K)::S(F)
- Refutation
- S(h);XR(K)
- Try
- B(J);CHECK
- Vars
- Q(c);XR(K)::S(F)
- B(d);P_PINP(H),P_SPINB(d)::S(F)
- Refutation
- S(h);XR(K)
- Try
- B(J);CHECK,XS(h)
- Vars
- Q(c);XR(K)::S(F)
- B(d);P_PINP(H),P_SPINB(d)::S(F)
- Refutation
- K(e);S_FLIGHT
- Try
- B(J);CHECK
- Vars
- Q(c);XR(K)::S(F)
- B(d);P_PINP(H),P_SPINB(d)::S(F)
- Refutation
- S(h);XR(K)
- Try
- R(A);
- Threat
- DUALS(2)
- Vars
- S(h);XR(K)::R1(A)
- Q(c);N_GUARD::S(F)
- R(i);::R(K)+B(J),DCHECK
- Refutation
- R(a);XR(A)
- Try
- Q(E);
- Threat
- QAR1(E),XP(f)
- Vars
- B(d);N_GUARD,P_PINS(D),P_SPINB(d),XP(B)::QAB(E)
- B(d);OGATE,P_PINP(H),P_SPINB(d),XB(J)::QAB(E)
- Q(c);N_GUARD::S(F)
- Refutation
- P(g);XP(I)
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- S(h);XR(K)::QAR1(E)
- Q(c);N_GUARD::S(F)
- S(h);N_GUARD,S_CUTQ(c)::R(K)+B(J),XB(d)
- Refutation
- R(i);XQ(E)
- Try
- Actual
- Q(E);
- Threat
- QAR1(E),XP(f)
- Vars
- B(d);OGATE,P_PINS(D),P_SPINB(d),XP(B)::QAB(E)
- B(d);N_GUARD,P_PINP(H),P_SPINB(d),XB(J)::QAB(E)
- P(g);N_GUARD,XP(I)::QAR1(E)
- Q(c);N_GUARD::S(F)
- S(h);N_GUARD,S_CUTQ(c)::R(K)+B(J),XB(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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