MESON Chess Problem Database
Problem Display
PID: 226488 (3R4/n7/1p4p1/5q1Q/1Bk3p1/P1N5/P1R1PPBp/7K w - - 0 1)
Laib, Kurt Friedrich
Kieler Schachgesellschaft, 1981
#2
11 + 7
| 16882 | KSG-Problemschach 1969-1987 (Muck/Laue) | 1993 |
SOLUTION
- SOUND
- Sets
- 1...Qxc2
- 2.Qd5#
- 1...Qd3
- 2.exd3#
- 1...Qe4
- 2.Sxe4#
- 1...Qe6
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 1...Qd7
- 2.Sb5#
- 1...Qc8
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd5#
- 1...Qxf2
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd5#
- 1...Qf4
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd5#
- 1...Qa5
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qxg4#
- 1...Qb5
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sxb5#
- 2.Qxg4#
- 1...Qd5
- 2.Qxd5#
- 1...Qf6
- 2.Qd5#
- 1...Qf7
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 1...Qf8
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd5#
- 1...b5
- 2.Se4#
- 1...Qxc2
- Tries
- 1.Sb1+?
- 1...Qxc2
- 2.Qd5#
- 1...Kb5!
- 1...Qxc2
- 1.Sd1+?
- 1...Qxc2
- 2.Se3#
- 2.Qd5#
- 1...Kb5!
- 1...Qxc2
- 1.Sa4+?
- 1...Qxc2
- 2.Sxb6#
- 2.Qd5#
- 1...Kb5!
- 1...Qxc2
- 1.Sb5+?
- 1...Qxc2
- 2.Rd4#
- 2.Qd5#
- 1...Kxb5!
- 1...Qxc2
- 1.Bd5+?
- 1...Qxd5+
- 2.Qxd5#
- 1...Kd4!
- 1...Qxd5+
- 1.Qxg4+?
- 1...Qe4
- 2.Qxe4#
- 1...Qf4
- 2.Qe6#
- 2.Qxf4#
- 1...Qxg4!
- 1...Qe4
- 1.Qxf5?
- threat
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd3#
- 2.Qe4#
- 2.Qxg4#
- 2.Qe6#
- 2.Qf4#
- 2.Qd5#
- 2.Qf7#
- 1...Sb5
- 2.Sxb5#
- 2.Qd3#
- 2.Qe6#
- 2.Qxb5#
- 2.Qd5#
- 2.Qf7#
- 1...Sc6
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd3#
- 2.Qe6#
- 2.Qb5#
- 2.Qd5#
- 2.Qf7#
- 1...g3
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd3#
- 2.Qe4#
- 2.Qg4#
- 2.Qe6#
- 2.Qf4#
- 2.Qd5#
- 2.Qf7#
- 1...b5
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sxb5#
- 2.Qd3#
- 2.Qe4#
- 2.Qxg4#
- 2.Qe6#
- 2.Qf4#
- 2.Qc5#
- 2.Qd5#
- 2.Qf7#
- 1...g5
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd3#
- 2.Qe4#
- 2.Qxg4#
- 2.Qe6#
- 2.Qd5#
- 2.Qf7#
- 1...gxf5!
- threat
- 1.e4?
- threat
- 2.Bf1#
- 1...Qxe4
- 2.Sxe4#
- 1...Qxf2
- 2.Se2#
- 2.Qd5#
- 1...Qd5
- 2.Qxd5#
- 1...Qf3
- 2.Qd5#
- 1...Qd7!
- threat
- 1.Sb1+?
- Keys
- 1.Bf1!
- threat
- 2.e4#
- 1...Qe4+
- 2.Sxe4#
- 1...Qf3+
- 2.exf3#
- 1...Qd5+
- 2.Qxd5#
- 1...Qxc2
- 2.Qd5#
- 1...Qxf2
- 2.Sb1#
- 2.Sd1#
- 2.Sa4#
- 2.Se4#
- 2.Sb5#
- 2.Qd5#
- 1...Qd7
- 2.Sb5#
- 1...Qd3
- 2.exd3#
- threat
- 1.Bf1!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(d);OGATE,XR(C)::QAB1(J)
- Q(d);OGATE::P(D),XQ(d)
- Q(d);P_PINB(F)::R(C)+S(H),XQ(d)
- Q(d);N_GUARD::R(C)+S(H)
- Q(d);OGATE,P_PINB(F)::QAB1(J),XQ(d)
- Q(d);OGATE::QAB1(J)
- P(e);SBLOCK::R(C)+S(H)
- Tries
- Try
- S(H);CHECK
- Vars
- Q(d);OGATE,XR(C)::QAB1(J)
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT
- Try
- S(H);CHECK
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT
- Try
- S(H);CHECK
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT
- Try
- S(H);CHECK
- Refutation
- K(b);P_SPINQ(d),S_FLIGHT,XS(H)
- Try
- B(F);CHECK
- Vars
- Q(d);CHECK,OGATE,XB(F)::QAB1(J),XQ(d)
- Refutation
- K(b);P-FLIGHT
- Try
- Q(J);CHECK,XP(c)
- Vars
- Q(d);N_GUARD,P_PINB(F),P_SPINQ(d)::QAR2(J),XQ(d)
- Refutation
- Q(d);XQ(J)
- Try
- Q(J);XQ(d)
- Threat
- DUALS(12)
- Refutation
- P(f);XQ(J)
- Try
- P(D);
- Threat
- B(F)
- Vars
- Q(d);P_PINB(F),XP(D)::R(C)+S(H),XQ(d)
- Q(d);OGATE::QAB1(J),XQ(d)
- Q(d);OGATE,P_PINB(F)::QAB1(J)
- Refutation
- Q(d);
- Try
- Actual
- B(F);
- Threat
- B(F)+P(D)
- Vars
- Q(d);CHECK::R(C)+S(H),XQ(d)
- Q(d);CHECK,OGATE::B(F)+P(D),XQ(d)
- Q(d);CHECK,OGATE::QAB1(J),XQ(d)
- Q(d);OGATE,XR(C)::QAB1(J)
- Q(d);N_GUARD::R(C)+S(H)
- Q(d);OGATE::P(D),XQ(d)
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