MESON Chess Problem Database
Problem Display
PID: 7793 (Q7/8/8/K7/1r6/kP1R4/4R3/8 w - - 0 1)
Mariz, Gabriel
The Problemist, 1993
#2
5 + 2
| 5454 | Near Snap | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxb3
- 2.Qf8#
- 1...Ra4+
- 2.bxa4#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Rxb3
- Tries
- 1.Rc2?
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rxb3
- 2.Qf8#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Rd4!
- 1...Ra4+
- 1.Red2?
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rxb3
- 2.Qf8#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Rd4!
- 1...Ra4+
- 1.Rf2?
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rxb3
- 2.Qf8#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Rd4!
- 1...Ra4+
- 1.Rg2?
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rxb3
- 2.Qf8#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Rd4!
- 1...Ra4+
- 1.Rh2?
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rxb3
- 2.Qf8#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Rd4!
- 1...Ra4+
- 1.Qh1?
- threat
- 2.Qa1#
- 2.Qc1#
- 1...Ra4+
- 2.bxa4#
- 1...Rc4
- 2.Qa1#
- 2.bxc4#
- 1...Rb5+!
- threat
- 1.Qg2?
- threat
- 2.Ra2#
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+!
- threat
- 1.Qc6?
- threat
- 2.Qc1#
- 1...Ra4+
- 2.Qxa4#
- 2.bxa4#
- 1...Rc4
- 2.bxc4#
- 1...Rb5+!
- threat
- 1.Qa6?
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rxb3
- 2.Qd6#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Rd4!
- 1...Ra4+
- 1.Qa7?
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rxb3
- 2.Qc5#
- 2.Qe7#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Rd4!
- 1...Ra4+
- 1.Qc8?
- threat
- 2.Qc1#
- 1...Ra4+
- 2.bxa4#
- 1...Rc4
- 2.bxc4#
- 1...Rb5+!
- threat
- 1.Rc2?
- Keys
- 1.Rc3!
- 1...Ra4+
- 2.bxa4#
- 1...Rb5+
- 2.Kxb5#
- 1...Rxb3
- 2.Qf8#
- 1...Rd4
- 2.b4#
- 1...Rc4
- 2.bxc4#
- 1...Re4
- 2.b4#
- 1...Rf4
- 2.b4#
- 1...Rg4
- 2.b4#
- 1...Rh4
- 2.b4#
- 1...Rb6
- 2.b4#
- 1...Rb7
- 2.b4#
- 1...Rb8
- 2.b4#
- 1...Ra4+
- 1.Rc3!
This anticipates 246106(1994)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(b);OGATEB,P_SPINR(b),XP(B)::QAB(E)
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- Tries
- Try
- R(A);
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- R(b);OGATEB,P_SPINR(b),XP(B)::QAB(E)
- R(b);OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B)
- Refutation
- R(b);
- Try
- R(A);
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- R(b);OGATEB,P_SPINR(b),XP(B)::QAB(E)
- R(b);OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B)
- Refutation
- R(b);
- Try
- R(A);
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- R(b);OGATEB,P_SPINR(b),XP(B)::QAB(E)
- R(b);OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B)
- Refutation
- R(b);
- Try
- R(A);
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- R(b);OGATEB,P_SPINR(b),XP(B)::QAB(E)
- R(b);OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B)
- Refutation
- R(b);
- Try
- R(A);
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- R(b);OGATEB,P_SPINR(b),XP(B)::QAB(E)
- R(b);OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B)
- Refutation
- R(b);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- Refutation
- R(b);CHECK
- Try
- Q(E);
- Threat
- R1(A)
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- Refutation
- R(b);CHECK
- Try
- Q(E);
- Threat
- QAB(E)
- Vars
- R(b);OGATE::R(C)+P(B),XR(b)
- Refutation
- R(b);CHECK
- Try
- Q(E);
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- R(b);OGATEB,P_SPINR(b),XP(B)::QAB(E)
- R(b);OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B)
- Refutation
- R(b);
- Try
- Q(E);
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- R(b);OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B)
- Refutation
- R(b);
- Try
- Q(E);
- Threat
- QAB(E)
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);OGATE::R(C)+P(B),XR(b)
- Refutation
- R(b);CHECK
- Try
- Actual
- R(C);
- Vars
- R(b);CHECK,OGATE::R(C)+P(B),XR(b)
- R(b);CHECK::QAR(E)+K(D),XR(b)
- R(b);OGATEB,P_SPINR(b),XP(B)::QAB(E)
- R(b);OGATE::R(C)+P(B)
- R(b);OGATE::R(C)+P(B),XR(b)
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