MESON Chess Problem Database
Problem Display
PID: 143908 (8/K7/3P4/1kp5/ppNPB3/8/Q7/4B3 w - - 0 1)
Luffingham, Timothy
British Chess Magazine, 1992
#2
7 + 4
SOLUTION
- SOUND
- Sets
- 1...b3
- 2.Sa3#
- 1...b3
- Tries
- 1.Kb7?
- threat
- 2.Bc6#
- 1...b3
- 2.Sa3#
- 1...cxd4!
- threat
- 1.Sb2?
- threat
- 2.Qxa4#
- 1...Ka5
- 2.Qxa4#
- 1...cxd4
- 2.Qd5#
- 1...a3!
- threat
- 1.Sb6?
- threat
- 2.Qxa4#
- 1...Ka5
- 2.Qxa4#
- 1...cxd4
- 2.Qd5#
- 1...a3!
- threat
- 1.Qb1?
- 1...Kxc4
- 2.Qd3#
- 1...cxd4
- 2.Qxb4#
- 1...b3
- 2.Sa3#
- 1...a3!
- 1...Kxc4
- 1.Qd2?
- 1...Kxc4
- 2.Qd3#
- 1...cxd4
- 2.Qxb4#
- 1...b3
- 2.Sa3#
- 1...a3!
- 1...Kxc4
- 1.d5?
- 1...b3
- 2.Sa3#
- 1...a3!
- 1...b3
- 1.Kb7?
- Keys
- 1.Qa3!
- 1...Kxc4
- 2.Qd3#
- 1...bxa3
- 2.Sxa3#
- 1...cxd4
- 2.Qxb4#
- 1...b3
- 2.Qxc5#
- 1...Kxc4
- 1.Qa3!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- P(b);N_GUARD::S(C)
- Tries
- Try
- K(G);P-FLIGHT
- Threat
- B(E)
- Vars
- P(b);N_GUARD::S(C)
- Refutation
- P(d);XP(D)
- Try
- S(C);
- Threat
- QAB1(B),XP(a)
- Vars
- K(c);P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
- P(d);OGATEB,XP(D)::QAR2(B)
- Refutation
- P(a);
- Try
- S(C);
- Threat
- QAB1(B),XP(a)
- Vars
- K(c);P-FLIGHT,P_SPINP(a)::QAR1(B),XP(a)
- P(d);OGATEB,XP(D)::QAR2(B)
- Refutation
- P(a);
- Try
- Q(B);P_PINP(b)
- Vars
- K(c);N_SPINP(b),OGATEB,S_FLIGHT,XS(C)::QAB1(B)
- P(d);N_GUARD,XP(D)::QAR1(B),XP(b)
- P(b);::S(C)
- Refutation
- P(a);
- Try
- Q(B);
- Vars
- K(c);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
- P(d);N_GUARD,XP(D)::QAR1(B),XP(b)
- P(b);N_GUARD::S(C)
- Refutation
- P(a);
- Try
- P(D);
- Vars
- P(b);N_GUARD::S(C)
- Refutation
- P(a);
- Try
- Actual
- Q(B);
- Vars
- K(c);OGATEB,S_FLIGHT,XS(C)::QAB1(B)
- P(b);XQ(B)::S(C),XP(b)
- P(d);N_GUARD,XP(D)::QAR1(B),XP(b)
- P(b);OGATE::QAR1(B),XP(d)
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