MESON Chess Problem Database
Problem Display
PID: 51114 (n7/1KN5/3kPP2/R2pp3/1Rppq3/2P2p2/5B2/8 w - - 0 1)
Penrose, Lionel Sharples
Manchester Guardian, 1949
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Qb1
- 2.Rxd5#
- 1...Qc2
- 2.Rxd5#
- 1...Qd3
- 2.Rxd5#
- 1...Qf5
- 2.Rxd5#
- 1...Qg6
- 2.Rxd5#
- 1...Qh7
- 2.Rxd5#
- 1...Qe1
- 2.Rxd5#
- 1...Qe2
- 2.Rxd5#
- 1...Qe3
- 2.Rxd5#
- 1...Qf4
- 2.Rxd5#
- 1...Qg4
- 2.Rxd5#
- 1...Qh4
- 2.Rxd5#
- 1...Sb6
- 2.Rxb6#
- 1...Sxc7
- 2.Rb6#
- 1...dxc3
- 2.Bc5#
- 1...d3
- 2.Bc5#
- 1...Qb1
- Tries
- 1.Bg1?
- 1...Sxc7
- 2.Rb6#
- 1...dxc3
- 2.Bc5#
- 1...Qb1
- 2.Rxd5#
- 1...Qc2
- 2.Rxd5#
- 1...Qd3
- 2.Rxd5#
- 1...Qf5
- 2.Rxd5#
- 1...Qg6
- 2.Rxd5#
- 1...Qh7
- 2.Rxd5#
- 1...Qe1
- 2.Rxd5#
- 1...Qe2
- 2.Rxd5#
- 1...Qe3
- 2.Rxd5#
- 1...Qf4
- 2.Rxd5#
- 1...Qg4
- 2.Rxd5#
- 1...Qh4
- 2.Rxd5#
- 1...Sb6
- 2.Rxb6#
- 1...d3
- 2.Bc5#
- 1...f2!
- 1...Sxc7
- 1.Rb1?
- 1...Sxc7
- 2.Rb6#
- 1...dxc3
- 2.Bc5#
- 1...Qc2
- 2.Rxd5#
- 1...Qd3
- 2.Rxd5#
- 1...Qf5
- 2.Rxd5#
- 1...Qg6
- 2.Rxd5#
- 1...Qh7
- 2.Rxd5#
- 1...Qe1
- 2.Rxd5#
- 1...Qe2
- 2.Rxd5#
- 1...Qe3
- 2.Rxd5#
- 1...Qf4
- 2.Rxd5#
- 1...Qg4
- 2.Rxd5#
- 1...Qh4
- 2.Rxd5#
- 1...Sb6
- 2.Rxb6#
- 1...d3
- 2.Bc5#
- 1...Qxb1+!
- 1...Sxc7
- 1.Rb3?
- 1...Sxc7
- 2.Rb6#
- 1...dxc3
- 2.Bc5#
- 1...Qb1
- 2.Rxd5#
- 1...Qc2
- 2.Rxd5#
- 1...Qd3
- 2.Rxd5#
- 1...Qf5
- 2.Rxd5#
- 1...Qg6
- 2.Rxd5#
- 1...Qh7
- 2.Rxd5#
- 1...Qe1
- 2.Rxd5#
- 1...Qe2
- 2.Rxd5#
- 1...Qe3
- 2.Rxd5#
- 1...Qf4
- 2.Rxd5#
- 1...Qg4
- 2.Rxd5#
- 1...Qh4
- 2.Rxd5#
- 1...Sb6
- 2.Rxb6#
- 1...d3
- 2.Bc5#
- 1...cxb3!
- 1...Sxc7
- 1.Rbb5?
- 1...Sxc7
- 2.Rb6#
- 1...dxc3
- 2.Bc5#
- 1...Qc2
- 2.Rxd5#
- 1...Qd3
- 2.Rxd5#
- 1...Qf5
- 2.Rxd5#
- 1...Qg6
- 2.Rxd5#
- 1...Qh7
- 2.Rxd5#
- 1...Qe1
- 2.Rxd5#
- 1...Qe2
- 2.Rxd5#
- 1...Qe3
- 2.Rxd5#
- 1...Qf4
- 2.Rxd5#
- 1...Qg4
- 2.Rxd5#
- 1...Qh4
- 2.Rxd5#
- 1...Sb6
- 2.Rxb6#
- 1...d3
- 2.Bc5#
- 1...Qb1!
- 1...Sxc7
- 1.Ra6+?
- 1...Kc5
- 2.Rb5#
- 2.Rc6#
- 1...Sb6!
- 1...Kc5
- 1.Bg1?
- Keys
- 1.Rb2!
- 1...Sxc7
- 2.Rb6#
- 1...dxc3
- 2.Bc5#
- 1...Qb1
- 2.Rxd5#
- 1...Qc2
- 2.Rxd5#
- 1...Qd3
- 2.Rxd5#
- 1...Qf5
- 2.Rxd5#
- 1...Qg6
- 2.Rxd5#
- 1...Qh7
- 2.Rxd5#
- 1...Qe1
- 2.Rxd5#
- 1...Qe2
- 2.Rxd5#
- 1...Qe3
- 2.Rxd5#
- 1...Qf4
- 2.Rxd5#
- 1...Qg4
- 2.Rxd5#
- 1...Qh4
- 2.Rxd5#
- 1...Sb6
- 2.Rxb6#
- 1...d3
- 2.Bc5#
- 1...Sxc7
- 1.Rb2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- Q(d);N_GUARD,P_PINR(C)::R1(D),XP(e)
- Q(d);N_GUARD::R1(D),XP(e)
- Q(d);N_GUARD,P_PINS(H)::R1(D),XP(e)
- S(h);N_GUARD::R(C),XS(h)
- S(h);N_GUARD,XS(H)::R(C)
- P(c);OGATE,XP(B)::B(A)
- P(c);OGATE::B(A)
- Tries
- Try
- B(A);
- Vars
- S(h);N_GUARD,XS(H)::R(C)
- P(c);OGATE,XP(B)::B(A)
- Q(d);N_GUARD,P_PINR(C)::R1(D),XP(e)
- Q(d);N_GUARD::R1(D),XP(e)
- Q(d);N_GUARD,P_PINS(H)::R1(D),XP(e)
- S(h);N_GUARD::R(C),XS(h)
- P(c);OGATE::B(A)
- Refutation
- P(a);
- Try
- R(C);
- Vars
- S(h);N_GUARD,XS(H)::R(C)
- P(c);OGATE,XP(B)::B(A)
- Q(d);N_GUARD::R1(D),XP(e)
- Q(d);N_GUARD,P_PINS(H)::R1(D),XP(e)
- S(h);N_GUARD::R(C),XS(h)
- P(c);OGATE::B(A)
- Refutation
- Q(d);CHECK,XR(C)
- Try
- R(C);
- Vars
- S(h);N_GUARD,XS(H)::R(C)
- P(c);OGATE,XP(B)::B(A)
- Q(d);N_GUARD,P_PINR(C)::R1(D),XP(e)
- Q(d);N_GUARD::R1(D),XP(e)
- Q(d);N_GUARD,P_PINS(H)::R1(D),XP(e)
- S(h);N_GUARD::R(C),XS(h)
- P(c);OGATE::B(A)
- Refutation
- P(b);XR(C)
- Try
- R(C);
- Vars
- S(h);N_GUARD,XS(H)::R(C)
- P(c);OGATE,XP(B)::B(A)
- Q(d);N_GUARD::R1(C),XP(e)
- Q(d);N_GUARD,P_PINS(H)::R1(C),XP(e)
- S(h);N_GUARD::R(C),XS(h)
- P(c);OGATE::B(A)
- Refutation
- Q(d);P_PINR(C)
- Try
- R(D);CHECK
- Refutation
- S(h);P_SPINS(h)
- Try
- Actual
- R(C);
- Vars
- S(h);N_GUARD,XS(H)::R(C)
- P(c);OGATE,XP(B)::B(A)
- Q(d);N_GUARD,P_PINR(C)::R1(D),XP(e)
- Q(d);N_GUARD::R1(D),XP(e)
- Q(d);N_GUARD,P_PINS(H)::R1(D),XP(e)
- S(h);N_GUARD::R(C),XS(h)
- P(c);OGATE::B(A)
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