MESON Chess Problem Database
Problem Display
PID: 11284 (BQR5/B4n2/p7/6p1/p5Pb/3k2Pn/1p2p3/4K2N w - - 0 1)
Penrose, Lionel Sharples
Southend Times, 1937
#2
8 + 9
| 3242 | BCPS Rapid Solving (Cheltenham) | 2001 |
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Bxg3+
- 2.Qxg3#
- 1...Sg1
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sf4
- 2.Sf2#
- 1...Se5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sh6
- 2.Qd6#
- 1...Sd8
- 2.Qd6#
- 1...Sh8
- 2.Qd6#
- 1...b1Q+
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...b1R+
- 2.Qxb1#
- 1...a3
- 2.Qb3#
- 1...a5
- 2.Qb5#
- 1...Bxg3+
- Tries
- 1.Bf3?
- 1...b1Q+
- 2.Qxb1#
- 1...b1R+
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...Sg1
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sf4
- 2.Sf2#
- 1...Se5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sh6
- 2.Qd6#
- 1...Sd8
- 2.Qd6#
- 1...Sh8
- 2.Qd6#
- 1...a3
- 2.Qb3#
- 1...a5
- 2.Qb5#
- 1...Bxg3+!
- 1...b1Q+
- 1.Qxb2?
- threat
- 2.Rc3#
- 2.Qa3#
- 2.Qc3#
- 2.Qd4#
- 2.Qb1#
- 2.Qc2#
- 2.Qd2#
- 2.Qxe2#
- 1...Sg1
- 2.Sf2#
- 2.Rc3#
- 2.Qa3#
- 2.Qc3#
- 2.Qd4#
- 2.Qb1#
- 2.Qc2#
- 2.Qd2#
- 1...Sf4
- 2.Sf2#
- 2.Rc3#
- 2.Qa3#
- 2.Qc3#
- 2.Qd4#
- 2.Qb1#
- 2.Qc2#
- 2.Qd2#
- 1...a3
- 2.Rc3#
- 2.Qxa3#
- 2.Qc3#
- 2.Qd4#
- 2.Qb1#
- 2.Qc2#
- 2.Qd2#
- 2.Qxe2#
- 2.Qb3#
- 1...Bxg3+!
- threat
- 1.Qb4?
- threat
- 2.Be4#
- 2.Rc3#
- 2.Qd2#
- 2.Qa3#
- 2.Qc3#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...b1Q+
- 2.Qxb1#
- 1...b1R+
- 2.Qxb1#
- 1...b1S
- 2.Be4#
- 2.Qxb1#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Se5
- 2.Be4#
- 2.Rc3#
- 2.Qd2#
- 2.Qa3#
- 2.Qc3#
- 2.Qd6#
- 2.Qd4#
- 2.Qe4#
- 1...Sf2
- 2.Sxf2#
- 2.Rc3#
- 2.Qd2#
- 2.Qa3#
- 2.Qc3#
- 2.Qc4#
- 2.Qd4#
- 1...Sd6
- 2.Rc3#
- 2.Qd2#
- 2.Qa3#
- 2.Qc3#
- 2.Qxd6#
- 2.Qd4#
- 1...a3
- 2.Be4#
- 2.Rc3#
- 2.Qd2#
- 2.Qxa3#
- 2.Qc3#
- 2.Qb3#
- 2.Qc4#
- 2.Qd4#
- 2.Qe4#
- 1...Bxg3+!
- threat
- 1.Qb6?
- threat
- 2.Qe3#
- 2.Qd4#
- 2.Qxa6#
- 2.Qg6#
- 1...b1Q+
- 2.Qxb1#
- 1...b1R+
- 2.Qxb1#
- 1...Se5
- 2.Qe3#
- 2.Qd4#
- 2.Qd6#
- 1...Sf2
- 2.Sxf2#
- 2.Qe3#
- 2.Qd4#
- 2.Qxa6#
- 1...Sf4
- 2.Sf2#
- 2.Qe3#
- 2.Qd4#
- 2.Qxa6#
- 1...Sd6
- 2.Qe3#
- 2.Qd4#
- 2.Qxd6#
- 1...Sh6
- 2.Qe3#
- 2.Qd4#
- 2.Qd8#
- 2.Qxa6#
- 2.Qd6#
- 1...Sh8
- 2.Qe3#
- 2.Qd4#
- 2.Qd8#
- 2.Qxa6#
- 2.Qd6#
- 1...a5
- 2.Qe3#
- 2.Qd4#
- 2.Qb5#
- 2.Qa6#
- 2.Qg6#
- 1...Bxg3+!
- threat
- 1.Qb7?
- threat
- 2.Qf3#
- 2.Qe4#
- 2.Qd5#
- 2.Qxa6#
- 1...b1Q+
- 2.Qxb1#
- 1...b1R+
- 2.Qxb1#
- 1...Se5
- 2.Qe4#
- 2.Qd5#
- 1...Sg1
- 2.Sf2#
- 2.Qe4#
- 2.Qd5#
- 2.Qxa6#
- 1...Sf2
- 2.Sxf2#
- 2.Qf3#
- 2.Qd5#
- 2.Qxa6#
- 1...Sf4
- 2.Sf2#
- 2.Qf3#
- 2.Qe4#
- 2.Qxa6#
- 1...Sd6
- 2.Qf3#
- 2.Qd5#
- 1...a5
- 2.Qf3#
- 2.Qe4#
- 2.Qd5#
- 2.Qa6#
- 2.Qb5#
- 1...Bxg3+!
- threat
- 1.gxh4?
- threat
- 2.Qg3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1R+
- 2.Qxb1#
- 1...Se5
- 2.Qd6#
- 1...Sg1
- 2.Sf2#
- 1...Sf4
- 2.Sf2#
- 1...Sd6
- 2.Qxd6#
- 1...gxh4!
- threat
- 1.Bf3?
- Keys
- 1.Bg2!
- 1...Bxg3+
- 2.Qxg3#
- 1...b1Q+
- 2.Qxb1#
- 1...b1R+
- 2.Qxb1#
- 1...b1S
- 2.Qxb1#
- 1...b1B
- 2.Qxb1#
- 1...Sg1
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sf4
- 2.Sf2#
- 1...Se5
- 2.Qd6#
- 1...Sd6
- 2.Qxd6#
- 1...Sh6
- 2.Qd6#
- 1...Sd8
- 2.Qd6#
- 1...Sh8
- 2.Qd6#
- 1...a3
- 2.Qb3#
- 1...a5
- 2.Qb5#
- 1...Bxg3+
- 1.Bg2!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- B(f);CHECK,OGATE,XP(C)::QAR(G),XB(f)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD,N_PINP(C)::S(B),XS(d)
- S(i);N_GUARD::QAR(G)
- S(i);N_GUARD::QAR(G),XS(i)
- P(a);CHECK,OGATE::QAB(G),XQ(a)
- P(a);OGATE::QAB(G),XS(a)
- P(a);OGATE::QAB(G),XB(a)
- P(a);CHECK,OGATE::QAB(G),XR(a)
- P(e);N_GUARD::QAR2(G)
- P(h);N_GUARD::QAB(G)
- Tries
- Try
- B(F);
- Vars
- P(a);CHECK,OGATE::QAB(G),XQ(a)
- P(a);CHECK,OGATE::QAB(G),XR(a)
- P(a);OGATE::QAB(G),XS(a)
- P(a);OGATE::QAB(G),XB(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD,N_PINP(C)::S(B),XS(d)
- S(i);N_GUARD::QAR(G)
- S(i);N_GUARD::QAR(G),XS(i)
- P(e);N_GUARD::QAR2(G)
- P(h);N_GUARD::QAB(G)
- Refutation
- B(f);CHECK,XP(C)
- Try
- Q(G);XP(a)
- Threat
- DUALS(8)
- Refutation
- B(f);CHECK,XP(C)
- Try
- Q(G);
- Threat
- DUALS(8)
- Vars
- P(a);CHECK,OGATE::QAB(G),XQ(a)
- P(a);CHECK,OGATE::QAB(G),XR(a)
- Refutation
- B(f);CHECK,XP(C)
- Try
- Q(G);
- Threat
- DUALS(4)
- Vars
- P(a);CHECK,OGATE::QAB(G),XQ(a)
- P(a);CHECK,OGATE::QAB(G),XR(a)
- Refutation
- B(f);CHECK,XP(C)
- Try
- Q(G);
- Threat
- DUALS(4)
- Vars
- P(a);CHECK,OGATE::QAB(G),XQ(a)
- P(a);CHECK,OGATE::QAB(G),XR(a)
- Refutation
- B(f);CHECK,XP(C)
- Try
- P(C);N_SPINP(C),XB(f)
- Threat
- QAR(G)
- Vars
- P(a);CHECK,OGATE::QAB(G),XQ(a)
- P(a);CHECK,OGATE::QAB(G),XR(a)
- S(i);N_GUARD::QAR(G)
- S(d);N_GUARD::S(B)
- S(i);N_GUARD::QAR(G),XS(i)
- Refutation
- P(g);XP(C)
- Try
- Actual
- B(F);
- Vars
- B(f);CHECK,OGATE,XP(C)::QAR(G),XB(f)
- P(a);CHECK,OGATE::QAB(G),XQ(a)
- P(a);CHECK,OGATE::QAB(G),XR(a)
- P(a);OGATE::QAB(G),XS(a)
- P(a);OGATE::QAB(G),XB(a)
- S(d);N_GUARD::S(B)
- S(d);N_GUARD,N_PINP(C)::S(B),XS(d)
- S(i);N_GUARD::QAR(G)
- S(i);N_GUARD::QAR(G),XS(i)
- P(e);N_GUARD::QAR2(G)
- P(h);N_GUARD::QAB(G)
Developed and maintained by Brian Stephenson.
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