MESON Chess Problem Database
Problem Display
PID: 99761 (1rB5/1Pk5/Q1N5/1p6/1Bp5/2K5/8/8 w - - 0 1)
Touw Hian Bwee
Magyar Sakkelet, 1978
#2
6 + 4
| 6490 | yacpdb | 2009 |
| 5454 | Near Snap | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Rxb7
- 2.Qxb7#
- 1...Ra8
- 2.bxa8S#
- 1...Rxc8
- 2.bxc8Q#
- 1...Rxb7
- Tries
- 1.Kb2?
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.bxa8S#
- 1...c3+!
- 1...Rxb7
- 1.Kc2?
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.bxa8S#
- 1...c3!
- 1...Rxb7
- 1.Kd2?
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.bxa8S#
- 1...c3+!
- 1...Rxb7
- 1.Kd4?
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.bxa8S#
- 1...c3!
- 1...Rxb7
- 1.Sa7?
- threat
- 2.Ba5#
- 2.Qa5#
- 2.Qd6#
- 1...Rxb7
- 2.Qd6#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.Qd6#
- 1...Kd8!
- threat
- 1.Se7?
- threat
- 2.Ba5#
- 2.Qa5#
- 2.Qd6#
- 1...Rxb7
- 2.Qd6#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.Qd6#
- 1...Kd8!
- threat
- 1.Sxb8?
- threat
- 2.Qd6#
- 1...Kxb8
- 2.Bd6#
- 1...Kd8!
- threat
- 1.Ba3?
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.bxa8S#
- 1...b4+!
- 1...Rxb7
- 1.Bc5?
- threat
- 2.Qb6#
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.bxc8Q#
- 1...b4+!
- threat
- 1.Be7?
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.bxa8S#
- 1...b4+!
- 1...Rxb7
- 1.Bf8?
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.bxc8Q#
- 1...Ra8
- 2.bxa8S#
- 1...b4+!
- 1...Rxb7
- 1.Kb2?
- Keys
- 1.Qa7!
- 1...Kxc6
- 2.Qc5#
- 1...Rxb7
- 2.Qxb7#
- 1...Rxc8
- 2.b8S#
- 1...Ra8
- 2.bxa8Q#
- 1...Kxc6
- 1.Qa7!
Anticipated by 203606(1924), 71199(1929), 110709(1955)
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE::PXR(d)=S
- R(d);OGATE,XB(F)::PXR(d)=Q
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);OGATE::PXR(d)=S
- Refutation
- P(a);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);OGATE::PXR(d)=S
- Refutation
- P(a);
- Try
- K(A);S_FLIGHT
- Vars
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);OGATE::PXR(d)=S
- Refutation
- P(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);OGATE::PXR(d)=S
- Refutation
- P(a);
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- R(d);XP(E)::QAB1(C)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);::QAB1(C)
- Refutation
- K(c);S_FLIGHT
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- R(d);XP(E)::QAB1(C)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);::QAB1(C)
- Refutation
- K(c);S_FLIGHT
- Try
- S(D);XR(d)
- Threat
- QAB1(C)
- Vars
- K(c);S_FLIGHT,XS(D)::B(B)
- Refutation
- K(c);S_FLIGHT
- Try
- B(B);
- Vars
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);OGATE::PXR(d)=S
- Refutation
- P(b);CHECK
- Try
- B(B);
- Threat
- QAB1(C)
- Vars
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE,XB(F)::PXR(d)=Q
- Refutation
- P(b);CHECK
- Try
- B(B);
- Vars
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);OGATE::PXR(d)=S
- Refutation
- P(b);CHECK
- Try
- B(B);
- Vars
- R(d);OGATE,XP(E)::QAR1(C),XR(d)
- R(d);OGATE,XB(F)::PXR(d)=Q
- R(d);OGATE::PXR(d)=S
- Refutation
- P(b);CHECK
- Try
- Actual
- Q(C);
- Vars
- K(c);OGATEB,P-FLIGHT,XS(D)::QAR1(C)
- R(d);OGATE,P_SPINR(d),XP(E)::QAR1(C),XR(d)
- R(d);OGATE,SBLOCK,XB(F)::P=S
- R(d);OGATE::PXR(d)=Q
Developed and maintained by Brian Stephenson.
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