MESON Chess Problem Database
Problem Display
PID: 271507 (8/8/p7/NkB5/1P3RK1/1r1p4/1P1p4/1N1B4 w - - 0 1)
Wigan, TK
The Problemist, 1956
#2
8 + 5
| 3713 | Snap | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Ka4
- Tries
- 1.Kf3?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Kg3?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Kh3?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Kh4?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Kf5?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Kg5?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Kh5?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Sa3+?
- 1...Ka4
- 2.Bxb3#
- 1...Rxa3!
- 1...Ka4
- 1.Bg1?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Bf2?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Be3?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Ba7?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Rf1?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4+!
- 1...Ka4
- 1.Rf2?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4+!
- 1...Ka4
- 1.Rf3?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4+!
- 1...Ka4
- 1.Rc4?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Rd4?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Re4?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4!
- 1...Ka4
- 1.Rf6?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 2.Rb6#
- 1...Ra3
- 2.Sxa3#
- 2.Rb6#
- 1...Rc3
- 2.Sxc3#
- 2.Rb6#
- 1...Rxb4+!
- 1...Ka4
- 1.Rf7?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 2.Rb7#
- 1...Ra3
- 2.Sxa3#
- 2.Rb7#
- 1...Rc3
- 2.Sxc3#
- 2.Rb7#
- 1...Rxb4+!
- 1...Ka4
- 1.Rf8?
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 2.Rb8#
- 1...Ra3
- 2.Sxa3#
- 2.Rb8#
- 1...Rc3
- 2.Sxc3#
- 2.Rb8#
- 1...Rxb4+!
- 1...Ka4
- 1.Kf3?
- Keys
- 1.Rf5!
- 1...Rxb4+
- 2.Bd4#
- 1...Ka4
- 2.Sc3#
- 1...Rxb2
- 2.Sa3#
- 2.Sc3#
- 1...Ra3
- 2.Sxa3#
- 1...Rc3
- 2.Sxc3#
- 1...Rxb4+
- 1.Rf5!
Anticipated by 51133(1950)
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Tries
- Try
- K(F);S_FLIGHT
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);XP(D)
- Try
- K(F);P-FLIGHT
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);XP(D)
- Try
- K(F);S_FLIGHT
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);XP(D)
- Try
- K(F);P-FLIGHT
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);P_PINR(E),XP(D)
- Try
- K(F);S_FLIGHT
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);XP(D)
- Try
- K(F);P-FLIGHT
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);XP(D)
- Try
- K(F);S_FLIGHT
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);XP(D)
- Try
- S(A);CHECK
- Vars
- K(d);P_SPINR(b),S_FLIGHT::B(B),XR(b)
- Refutation
- R(b);XS(A)
- Try
- B(H);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);P_PINR(E),XP(D)
- Try
- B(H);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);P_PINR(E),XP(D)
- Try
- B(H);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);P_PINR(E),XP(D)
- Try
- B(H);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);P_PINR(E),XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);CHECK,XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);CHECK,XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);CHECK,XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);P_PINR(E),XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);P_PINR(E),XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
- Refutation
- R(b);P_PINR(E),XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- Refutation
- R(b);CHECK,XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- Refutation
- R(b);CHECK,XP(D)
- Try
- R(E);
- Vars
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- Refutation
- R(b);CHECK,XP(D)
- Try
- Actual
- R(E);
- Vars
- R(b);CHECK,SBLOCK,XP(D)::R(E)+B(H)
- K(d);P_SPINR(b),S_FLIGHT::S(A)
- R(b);N_GUARD::S(A),XR(b)
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