MESON Chess Problem Database
Problem Display
PID: 161862 (2k1K3/1RPrp3/8/5Q2/8/8/8/8 w - - 0 1)
Andreev, Aleksandr Grigorevich
Kuban segodniya, 1996
#2
4 + 3
| 15148 | Sadier Collection | 2017 |
| 5454 | Near Snap | 2023 |
SOLUTION
- SOUND
- Tries
- 1.Rb1?
- threat
- 2.Qxd7#
- 1...Kxc7
- 2.Qxd7#
- 2.Qc5#
- 1...e6!
- threat
- 1.Rb2?
- threat
- 2.Qxd7#
- 1...Kxc7
- 2.Qxd7#
- 2.Qc5#
- 1...e6!
- threat
- 1.Rb3?
- threat
- 2.Qxd7#
- 1...Kxc7
- 2.Qxd7#
- 2.Qc5#
- 1...e6!
- threat
- 1.Rb4?
- threat
- 2.Qxd7#
- 1...Kxc7
- 2.Qxd7#
- 2.Qc5#
- 1...e6!
- threat
- 1.Rb5?
- threat
- 2.Qxd7#
- 1...Kxc7
- 2.Qxd7#
- 2.Qc5#
- 1...e6!
- threat
- 1.Rb6?
- threat
- 2.Qxd7#
- 1...Kxc7
- 2.Qc5#
- 1...e6!
- threat
- 1.Qc2?
- threat
- 2.Rb8#
- 1...Rd8+
- 2.cxd8S#
- 1...Rxc7
- 2.Qxc7#
- 1...Kxb7!
- threat
- 1.Rb1?
- Keys
- 1.Qc5!
- threat
- 2.Rb8#
- 1...Rd8+
- 2.cxd8S#
- 1...Kxb7
- 2.c8Q#
- 1...Rxc7
- 2.Qxc7#
- threat
- 1.Qc5!
This anticipates 270644(2020)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- Tries
- Try
- R(B);
- Threat
- QAB1(A),XR(a)
- Refutation
- P(b);N_SPINR(a)
- Try
- R(B);
- Threat
- QAB1(A),XR(a)
- Refutation
- P(b);N_SPINR(a)
- Try
- R(B);
- Threat
- QAB1(A),XR(a)
- Refutation
- P(b);N_SPINR(a)
- Try
- R(B);
- Threat
- QAB1(A),XR(a)
- Refutation
- P(b);N_SPINR(a)
- Try
- R(B);
- Threat
- QAB1(A),XR(a)
- Refutation
- P(b);N_SPINR(a)
- Try
- R(B);
- Threat
- QAB1(A),XR(a)
- Vars
- K(c);N_SPINR(a),OGATEB,P-FLIGHT,XP(C)::QAR2(A)
- Refutation
- P(b);N_SPINR(a)
- Try
- Q(A);N_PINR(a)
- Threat
- R1(B)
- Vars
- R(a);CHECK,OGATE::PXR(a)=S
- R(a);OGATE,P_SPINR(a),XP(C)::QAR1(A),XR(a)
- Refutation
- K(c);S_FLIGHT,XR(B)
- Try
- Actual
- Q(A);N_PINR(a)
- Threat
- R1(B)
- Vars
- R(a);CHECK,OGATE::PXR(a)=S
- K(c);OGATE,S_FLIGHT,XR(B)::P=Q
- R(a);OGATE,P_SPINR(a),XP(C)::QAR1(A),XR(a)
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