MESON Chess Problem Database
Problem Display
PID: 200597 (8/8/2p1K3/8/2N2Nn1/3QpkP1/4RP1P/2b5 w - - 0 1)
Rains, Cyril George
The Observer, 1948
(First published on Sun Feb 22 1948)
#2
8 + 5
| 15239 | Valois Notebooks | 2019 |
SOLUTION
- SOUND
- Sets
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Sxf2
- 2.Se5#
- 1...Sxh2
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...c5
- 2.Qd5#
- 1...Bb2
- Tries
- 1.Kf5?
- threat
- 2.Qe4#
- 1...Sxf2
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Sh6+!
- threat
- 1.Kd6?
- 1...Sxf2
- 2.Se5#
- 1...Sxh2
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...c5
- 2.Qd5#
- 1...Ba3+!
- 1...Sxf2
- 1.Kd7?
- 1...Se5+
- 2.Sxe5#
- 1...Sxf2
- 2.Se5#
- 1...Sxh2
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...c5
- 2.Qd5#
- 1...Sf6+!
- 1...Se5+
- 1.Ke7?
- 1...Sxf2
- 2.Se5#
- 1...Sxh2
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...c5
- 2.Qd5#
- 1...Ba3+!
- 1...Sxf2
- 1.Kf7?
- 1...Se5+
- 2.Sxe5#
- 1...Sxf2
- 2.Se5#
- 1...Sxh2
- 2.Se5#
- 1...Sf6
- 2.Se5#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...c5
- 2.Qd5#
- 1...Sh6+!
- 1...Se5+
- 1.fxe3?
- 1...Bxe3
- 2.Sd2#
- 1...Sxe3
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...c5
- 2.Qd5#
- 1...Sxh2!
- 1...Bxe3
- 1.h3?
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...Sh2
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...c5
- 2.Qd5#
- 1...Sxf2!
- 1...Bb2
- 1.h4?
- 1...Sh2
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Bb2
- 2.Sd2#
- 1...Bd2
- 2.Sxd2#
- 1...Ba3
- 2.Sd2#
- 1...c5
- 2.Qd5#
- 1...Sxf2!
- 1...Sh2
- 1.Kf5?
- Keys
- 1.Qb1!
- 1...Sxf2
- 2.Se5#
- 1...Sxh2
- 2.Se5#
- 1...exf2
- 2.Qe4#
- 1...Se5
- 2.Sxe5#
- 1...Sf6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Bb2
- 2.Qh1#
- 1...Bd2
- 2.Qh1#
- 1...Ba3
- 2.Qh1#
- 1...c5
- 2.Qb7#
- 1...Sxf2
- 1.Qb1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- S(d);N_GUARD,XP(B)::S(F)
- S(d);N_GUARD,XP(C)::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(d);N_GUARD::S(F)
- P(e);N_GUARD::QAB(D)
- Tries
- Try
- K(H);S_FLIGHT
- Threat
- QAB1(D)
- Vars
- S(d);N_GUARD,XP(B)::S(F)
- S(d);N_GUARD::S(F)
- Refutation
- S(d);CHECK
- Try
- K(H);P-FLIGHT
- Vars
- S(d);N_GUARD,XP(B)::S(F)
- S(d);N_GUARD,XP(C)::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(d);N_GUARD::S(F)
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- P(e);N_GUARD::QAB(D)
- Refutation
- B(a);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- S(d);N_GUARD,XP(B)::S(F)
- S(d);N_GUARD,XP(C)::S(F)
- S(d);N_GUARD::S(F)
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- P(e);N_GUARD::QAB(D)
- Refutation
- S(d);CHECK
- Try
- K(H);P-FLIGHT
- Vars
- S(d);N_GUARD,XP(B)::S(F)
- S(d);N_GUARD,XP(C)::S(F)
- S(d);N_GUARD::S(F),XS(d)
- S(d);N_GUARD::S(F)
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- P(e);N_GUARD::QAB(D)
- Refutation
- B(a);CHECK
- Try
- K(H);S_FLIGHT
- Vars
- S(d);CHECK,N_GUARD::S(F),XS(d)
- S(d);N_GUARD,XP(B)::S(F)
- S(d);N_GUARD,XP(C)::S(F)
- S(d);N_GUARD::S(F)
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- P(e);N_GUARD::QAB(D)
- Refutation
- S(d);CHECK
- Try
- P(B);XP(b)
- Vars
- B(a);N_GUARD,P_SPINB(a),XP(B)::S(F)
- S(d);N_GUARD,P_SPINS(d),XP(B)::S(F)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- P(e);N_GUARD::QAB(D)
- Refutation
- S(d);XP(C)
- Try
- P(C);
- Vars
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- P(e);N_GUARD::QAB(D)
- Refutation
- S(d);XP(B)
- Try
- P(C);
- Vars
- S(d);N_GUARD::S(F)
- S(d);N_GUARD::S(F),XS(d)
- B(a);N_GUARD::S(F)
- B(a);N_GUARD::S(F),XB(a)
- P(e);N_GUARD::QAB(D)
- Refutation
- S(d);XP(B)
- Try
- Actual
- Q(D);N_PINP(b)
- Vars
- S(d);N_GUARD,XP(B)::S(F)
- S(d);N_GUARD,XP(C)::S(F)
- P(b);XP(B)::QAB1(D)
- S(d);N_GUARD::S(F),XS(d)
- S(d);N_GUARD::S(F)
- B(a);OGATE::QAB(D)
- P(e);OGATEB::QAB(D)
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