MESON Chess Problem Database
Problem Display
PID: 271477 (2n5/1prrpp2/4p3/N3P3/n7/3kP2R/B1R3Q1/2K5 w - - 0 1)
Stevenson, Edward
The Observer, 1960
(First published on Sun May 22 1960)
#2
8 + 9
| 17397 | Ling Notebooks | 2023 |
SOLUTION
- SOUND
- Sets
- 1...Rxc2+
- 2.Qxc2#
- 1...Rc4
- 2.Bxc4#
- 1...Rd4
- 2.e4#
- 1...Sc3
- 2.Rd2#
- 1...Sc5
- 2.Bc4#
- 1...Rxc2+
- Tries
- 1.Sc6?
- threat
- 2.Sb4#
- 2.Bc4#
- 2.e4#
- 1...bxc6
- 2.Bc4#
- 1...Rd4
- 2.exd4#
- 2.e4#
- 1...Sb2
- 2.Sb4#
- 2.e4#
- 1...Sc3
- 2.Sb4#
- 2.Rd2#
- 2.e4#
- 1...Sab6
- 2.Sb4#
- 2.e4#
- 1...Scb6
- 2.Sb4#
- 2.e4#
- 1...Sd6
- 2.Sb4#
- 2.e4#
- 1...b5
- 2.Sb4#
- 2.e4#
- 1...Rxc6!
- threat
- 1.Bb1?
- threat
- 2.Rc4#
- 2.Rc5#
- 2.Rc6#
- 2.Rxc7#
- 1...Rxc2+
- 2.Qxc2#
- 1...Rc5
- 2.Rc4#
- 2.Rxc5#
- 1...Rc4
- 2.Rxc4#
- 1...Rc6
- 2.Rc4#
- 2.Rc5#
- 2.Rxc6#
- 1...Sc3
- 2.Rd2#
- 1...Sc5
- 2.Rc4#
- 2.Rxc5#
- 1...Rc3!
- threat
- 1.Rc4?
- threat
- 2.Bb1#
- 2.Qf1#
- 2.Qc2#
- 2.Qd2#
- 2.e4#
- 1...Rd4
- 2.Bb1#
- 2.Qc2#
- 2.exd4#
- 2.e4#
- 1...Sc3
- 2.Qc2#
- 2.Qd2#
- 2.e4#
- 1...Rxc4+!
- threat
- 1.Rc5?
- threat
- 2.Bb1#
- 2.Qc2#
- 1...Sxc5
- 2.Qc2#
- 1...Sc3
- 2.Bc4#
- 2.Qc2#
- 1...Rxc5+!
- threat
- 1.Rc6?
- threat
- 2.Bb1#
- 2.Qc2#
- 1...bxc6
- 2.Qc2#
- 1...Sc5
- 2.Qc2#
- 1...Sc3
- 2.Bc4#
- 2.Qc2#
- 1...Rxc6+!
- threat
- 1.Rxc7?
- threat
- 2.Bb1#
- 2.Qc2#
- 1...Sc5
- 2.Qc2#
- 1...Sc3
- 2.Bc4#
- 2.Qc2#
- 1...Rxc7+!
- threat
- 1.Rh4?
- threat
- 2.Qe4#
- 2.Qd2#
- 2.Qe2#
- 1...Kxe3
- 2.Qh3#
- 2.Qe4#
- 2.Qe2#
- 2.Qg3#
- 1...Rc4
- 2.Qd2#
- 2.Qe2#
- 1...Rd4
- 2.Qd2#
- 2.Qe2#
- 1...Sc3
- 2.Qd2#
- 1...Sc5
- 2.Qd2#
- 2.Qe2#
- 1...Sd6
- 2.Qd2#
- 2.Qe2#
- 1...f5
- 2.Qd2#
- 2.Qe2#
- 1...Rxc2+!
- threat
- 1.Qg6+?
- 1...f5
- 2.exf5 ep#
- 1...fxg6!
- 1...f5
- 1.Sc6?
- Keys
- 1.Bxe6!
- threat
- 2.Bf5#
- 1...Rxc2+
- 2.Qxc2#
- 1...fxe6
- 2.Qg6#
- 1...Rc4
- 2.Bxc4#
- 1...Rd4
- 2.e4#
- 1...Sc3
- 2.Rd2#
- 1...Sc5
- 2.Bc4#
- 1...Sd6
- 2.Qd5#
- 1...f5
- 2.Bxf5#
- threat
- 1.Bxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- R(e);CHECK,OGATE,XR(C)::QAB1(D),XR(e)
- R(e);N_GUARD::B(B),XR(e)
- R(f);SBLOCK::R(F)+P(E)
- S(b);N_PINR(C),SBLOCK::R1(C)
- S(b);N_PINR(C),S_CUTR(e)::B(B)
- Tries
- Try
- S(G);N_SPINR(C)
- Threat
- DUALS(3)
- Vars
- P(d);XS(G)::B(B)
- Refutation
- R(e);P_PINR(C),XS(G)
- Try
- B(B);
- Threat
- DUALS(4)
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XR(C)::QAB1(D),XR(e)
- R(e);::B(B)+R(C),XR(e)
- S(b);N_PINR(C),SBLOCK::B(B)+R(C),DCHECK
- Refutation
- R(e);
- Try
- R(C);
- Threat
- DUALS(5)
- Refutation
- R(e);CHECK,XR(C)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- S(b);XR(C)::QAB1(D)
- Refutation
- R(e);CHECK,XR(C)
- Try
- R(C);
- Threat
- DUALS(2)
- Vars
- P(d);XR(C)::QAB1(D)
- S(b);N_PINR(C)::QAB1(D)
- Refutation
- R(e);CHECK,XR(C)
- Try
- R(C);N_SPINR(C),XR(e)
- Threat
- DUALS(2)
- Vars
- S(b);::QAB1(D)
- Refutation
- R(f);CHECK,XR(C)
- Try
- R(F);
- Threat
- DUALS(3)
- Vars
- S(b);N_PINR(C)::QAR1(D)
- Refutation
- R(e);CHECK,XR(C)
- Try
- Q(D);CHECK
- Vars
- P(h);OGATE,P_SPINP(h)::QAB(D)+P(H),XP(h),EP
- Refutation
- P(h);XQ(D)
- Try
- Actual
- B(B);XP(c)
- Threat
- B(B)
- Vars
- R(e);CHECK,OGATE,XR(C)::QAB1(D),XR(e)
- P(h);N_GUARD,XB(B)::QAB(D)
- R(e);N_GUARD::B(B),XR(e)
- R(f);SBLOCK::R(F)+P(E)
- S(b);N_PINR(C),SBLOCK::R1(C)
- S(b);N_PINR(C),S_CUTR(e)::B(B)
- S(i);S_CUTR(f)::QAR2(D)
- P(h);::B(B),XP(h)
Developed and maintained by Brian Stephenson.
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