MESON Chess Problem Database
Problem Display
PID: 205650 (8/5p2/B2pbPp1/R2p2K1/1pPk1p2/1Rp2P2/3PQP2/8 w - - 0 1)
Lyness, Robert Cranston
The Observer, 1953
(First published on Sun Jul 5 1953)
#2
10 + 9
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bh3
- 2.Rxd5#
- 1...Bg4
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bd7
- 2.Rxd5#
- 1...Bc8
- 2.Rxd5#
- 1...cxd2
- 2.Rd3#
- 1...c2
- 2.Rd3#
- 1...dxc4
- 2.Qe4#
- 1...Bh3
- Tries
- 1.Kh4?
- 1...cxd2
- 2.Rd3#
- 1...dxc4
- 2.Qe4#
- 1...Bh3
- 2.Rxd5#
- 1...Bg4
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bd7
- 2.Rxd5#
- 1...Bc8
- 2.Rxd5#
- 1...c2
- 2.Rd3#
- 1...g5+!
- 1...cxd2
- 1.Kh6?
- 1...cxd2
- 2.Rd3#
- 1...dxc4
- 2.Qe4#
- 1...Bh3
- 2.Rxd5#
- 1...Bg4
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bd7
- 2.Rxd5#
- 1...Bc8
- 2.Rxd5#
- 1...c2
- 2.Rd3#
- 1...g5!
- 1...cxd2
- 1.Rxc3?
- threat
- 2.Rd3#
- 1...dxc4
- 2.Qe4#
- 1...Bf5
- 2.Rxd5#
- 1...bxc3!
- threat
- 1.Rxb4?
- threat
- 2.cxd5#
- 2.c5#
- 1...dxc4
- 2.Qe4#
- 1...cxd2!
- threat
- 1.Qd3+?
- 1...Ke5
- 2.Qe4#
- 1...Kxd3!
- 1...Ke5
- 1.Qe1?
- 1...cxd2
- 2.Qa1#
- 1...dxc4
- 2.Qe4#
- 1...c2
- 2.Qa1#
- 1...Bh3
- 2.Rxd5#
- 1...Bg4
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bd7
- 2.Rxd5#
- 1...Bc8
- 2.Rxd5#
- 1...Kd3!
- 1...cxd2
- 1.d3?
- 1...dxc4
- 2.Qe4#
- 1...Bh3
- 2.Rxd5#
- 1...Bg4
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bd7
- 2.Rxd5#
- 1...Bc8
- 2.Rxd5#
- 1...c2!
- 1...dxc4
- 1.cxd5?
- threat
- 2.Rxb4#
- 2.Qe4#
- 1...cxd2
- 2.Rd3#
- 2.Qe4#
- 1...Bf5
- 2.Rxb4#
- 1...Bxd5!
- threat
- 1.c5?
- threat
- 2.Rxb4#
- 1...cxd2
- 2.Rd3#
- 1...dxc5!
- threat
- 1.Kh4?
- Keys
- 1.Qd1!
- 1...Kd3
- 2.dxc3#
- 1...Ke5
- 2.d4#
- 1...cxd2
- 2.Qa1#
- 1...dxc4
- 2.dxc3#
- 1...c2
- 2.Qa1#
- 1...Bh3
- 2.Rxd5#
- 1...Bg4
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bd7
- 2.Rxd5#
- 1...Bc8
- 2.Rxd5#
- 1...Kd3
- 1.Qd1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- B(g);N_GUARD::R1(G),XP(e)
- P(a);OGATE,XP(A)::R1(D)
- P(a);OGATE::R1(D)
- P(e);N_GUARD,XP(F)::QAR1(B)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- P(a);OGATE,XP(A)::R1(D)
- P(e);N_GUARD,XP(F)::QAR1(B)
- B(g);N_GUARD::R1(G),XP(e)
- P(a);OGATE::R1(D)
- Refutation
- P(h);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- P(a);OGATE,XP(A)::R1(D)
- P(e);N_GUARD,XP(F)::QAR1(B)
- B(g);N_GUARD::R1(G),XP(e)
- P(a);OGATE::R1(D)
- Refutation
- P(h);
- Try
- R(D);XP(a)
- Threat
- R1(D)
- Vars
- P(e);N_GUARD,XP(F)::QAR1(B)
- B(g);N_GUARD::R1(G),XP(e)
- Refutation
- P(b);XR(D)
- Try
- R(D);XP(b)
- Threat
- DUALS(2)
- Vars
- P(e);N_GUARD,P_SPINP(e),XP(F)::QAR1(B)
- Refutation
- P(a);XP(A)
- Try
- Q(B);CHECK
- Vars
- K(c);P_SPINP(e),S_FLIGHT::QAR1(B)
- Refutation
- K(c);P-FLIGHT,P_SPINP(a),XQ(B)
- Try
- Q(B);
- Vars
- P(a);OGATEB,XP(A)::QAB(B)
- P(e);N_GUARD,XP(F)::QAR1(B)
- P(a);OGATEB::QAB(B)
- B(g);N_GUARD::R1(G),XP(e)
- Refutation
- K(c);P-FLIGHT,P_SPINP(a)
- Try
- P(A);
- Vars
- P(e);N_GUARD,XP(F)::QAR1(B)
- B(g);N_GUARD::R1(G),XP(e)
- Refutation
- P(a);
- Try
- P(F);XP(e)
- Threat
- DUALS(2)
- Vars
- B(g);::R(D),XP(b)
- Refutation
- B(g);XP(F)
- Try
- P(F);
- Threat
- R(D),XP(b)
- Vars
- P(a);OGATE,XP(A)::R1(D)
- Refutation
- P(f);XP(F)
- Try
- Actual
- Q(B);
- Vars
- K(c);P-FLIGHT,P_SPINP(a)::QAR(B)+P(A),XP(a)
- K(c);OGATE,P_SPINP(e),S_FLIGHT::P(A)
- P(a);OGATEB,P_SPINP(a),XP(A)::QAB(B)
- P(e);XP(F)::QAR(B)+P(A)DCHECK,XP(a)
- P(a);OGATEB::QAB(B)
- B(g);N_GUARD::R1(G),XP(e)
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