MESON Chess Problem Database
Problem Display
PID: 64953 (1Q2B3/4k1pN/p6p/r2PKP1r/nbPNRRp1/B7/nq6/8 w - - 0 1)
Mendes de Moraes Filho, Feliciano
Good Companions (November), 1921
#2
11 + 11
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Sc6#
- 1...Qxa3
- 2.Sc6#
- 1...Qxd4+
- 2.Kxd4#
- 1...Qb1
- 2.Sc6#
- 1...Qc2
- 2.Sc6#
- 1...Qd2
- 2.Sc6#
- 1...Qe2
- 2.Sc6#
- 1...Qf2
- 2.Sc6#
- 1...Qg2
- 2.Sc6#
- 1...Qh2
- 2.Sc6#
- 1...Qb3
- 2.Sc6#
- 1...Rxd5+
- 2.Kxd5#
- 1...Rxf5+
- 2.Kxf5#
- 1...Bd6+
- 2.Bxd6#
- 1...S2c3
- 2.Sc6#
- 1...S4c3
- 2.Sc6#
- 1...Sc5
- 2.d6#
- 1...g5
- 2.f6#
- 1...Qc1
- Tries
- 1.Rf1?
- threat
- 2.Kf4#
- 1...Qxd4+
- 2.Kxd4#
- 1...Rxd5+
- 2.Kxd5#
- 1...Rxf5+
- 2.Kxf5#
- 1...Bd6+
- 2.Bxd6#
- 1...Qc1
- 2.Sc6#
- 1...Qb1
- 2.Sc6#
- 1...Qc2
- 2.Sc6#
- 1...Qd2
- 2.Sc6#
- 1...Qe2
- 2.Sc6#
- 1...Qf2
- 2.Sc6#
- 1...Qg2
- 2.Sc6#
- 1...S2c3
- 2.Sc6#
- 1...S4c3
- 2.Sc6#
- 1...Sc5
- 2.d6#
- 1...g5
- 2.f6#
- 1...Qh2+!
- threat
- 1.Rf3?
- threat
- 2.Kf4#
- 1...Qxd4+
- 2.Kxd4#
- 1...Rxd5+
- 2.Kxd5#
- 1...Rxf5+
- 2.Kxf5#
- 1...Bd6+
- 2.Bxd6#
- 1...Qc1
- 2.Sc6#
- 1...Qb1
- 2.Sc6#
- 1...Qc2
- 2.Sc6#
- 1...Qd2
- 2.Sc6#
- 1...Qe2
- 2.Sc6#
- 1...S2c3
- 2.Sc6#
- 1...S4c3
- 2.Sc6#
- 1...Sc5
- 2.d6#
- 1...g5
- 2.f6#
- 1...Qh2+!
- threat
- 1.Rxg4?
- threat
- 2.Kf4#
- 2.Rxg7#
- 1...Qxd4+
- 2.Kxd4#
- 1...Rxd5+
- 2.Kxd5#
- 1...Rxf5+
- 2.Kxf5#
- 1...Bd6+
- 2.Bxd6#
- 1...Qc1
- 2.Sc6#
- 2.Rxg7#
- 1...Qb1
- 2.Sc6#
- 2.Rxg7#
- 1...Qc2
- 2.Sc6#
- 2.Rxg7#
- 1...Qd2
- 2.Sc6#
- 2.Rxg7#
- 1...Qe2
- 2.Sc6#
- 2.Rxg7#
- 1...Qf2
- 2.Sc6#
- 2.Rxg7#
- 1...Qg2
- 2.Sc6#
- 1...Rg5
- 2.Kf4#
- 1...S2c3
- 2.Sc6#
- 2.Rxg7#
- 1...S4c3
- 2.Sc6#
- 2.Rxg7#
- 1...Sc5
- 2.Rxg7#
- 2.d6#
- 1...g5
- 2.f6#
- 1...g6
- 2.Kf4#
- 1...Qh2+!
- threat
- 1.Qa7+?
- 1...Kd8
- 2.Qd7#
- 1...Kxe8!
- 1...Kd8
- 1.Qb7+?
- 1...Kd8
- 2.Qd7#
- 1...Kxe8!
- 1...Kd8
- 1.Rf1?
- Keys
- 1.Rf2!
- threat
- 2.Kf4#
- 1...Qxd4+
- 2.Kxd4#
- 1...Rxd5+
- 2.Kxd5#
- 1...Rxf5+
- 2.Kxf5#
- 1...Bd6+
- 2.Bxd6#
- 1...Qxf2
- 2.Sc6#
- 1...Qc1
- 2.Sc6#
- 1...Qb1
- 2.Sc6#
- 1...Qc2
- 2.Sc6#
- 1...Qd2
- 2.Sc6#
- 1...Qe2
- 2.Sc6#
- 1...S2c3
- 2.Sc6#
- 1...S4c3
- 2.Sc6#
- 1...Sc5
- 2.d6#
- 1...g5
- 2.f6#
- threat
- 1.Rf2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- Q(b);N_PINS(C)::S(C)
- Q(b);N_PINS(C),N_SPINB(d),XB(A)::S(C)
- Q(b);CHECK,XS(C)::R(D)+K(G),XQ(b)
- Q(b);N_PINS(C),P_PINR(D)::S(C)
- Q(b);N_PINS(C),P_PINR(E)::S(C)
- R(f);CHECK,P_PINP(H),XP(F)::R(D)+K(G),XR(f)
- R(g);CHECK,XP(H)::R(D)+K(G),XR(g)
- B(d);CHECK,OGATE::B(A),XB(d)
- S(a);N_PINS(C)::S(C)
- S(c);N_PINS(C)::S(C)
- S(c);N_PINP(F),N_SPINB(d),P_PINP(H)::P(F)
- P(k);OGATE::P(H)
- Tries
- Try
- R(E);
- Threat
- R(D)+K(G)
- Vars
- Q(b);CHECK,XS(C)::R(D)+K(G),XQ(b)
- R(f);CHECK,P_PINP(H),XP(F)::R(D)+K(G),XR(f)
- R(g);CHECK,XP(H)::R(D)+K(G),XR(g)
- B(d);CHECK,OGATE::B(A),XB(d)
- Q(b);N_PINS(C)::S(C)
- Q(b);N_PINS(C),P_PINR(D)::S(C)
- S(a);N_PINS(C)::S(C)
- S(c);N_PINS(C)::S(C)
- S(c);N_PINP(F),N_SPINB(d),P_PINP(H)::P(F)
- P(k);OGATE::P(H)
- Refutation
- Q(b);CHECK,N_PINS(C)
- Try
- R(E);
- Threat
- R(D)+K(G)
- Vars
- Q(b);CHECK,XS(C)::R(D)+K(G),XQ(b)
- R(f);CHECK,P_PINP(H),XP(F)::R(D)+K(G),XR(f)
- R(g);CHECK,XP(H)::R(D)+K(G),XR(g)
- B(d);CHECK,OGATE::B(A),XB(d)
- Q(b);N_PINS(C)::S(C)
- Q(b);N_PINS(C),P_PINR(D)::S(C)
- S(a);N_PINS(C)::S(C)
- S(c);N_PINS(C)::S(C)
- S(c);N_PINP(F),N_SPINB(d),P_PINP(H)::P(F)
- P(k);OGATE::P(H)
- Refutation
- Q(b);CHECK,N_PINS(C)
- Try
- R(E);XP(e)
- Threat
- DUALS(2)
- Vars
- Q(b);CHECK,XS(C)::R(D)+K(G),XQ(b)
- R(f);CHECK,P_PINP(H),XP(F)::R(D)+K(G),XR(f)
- R(g);CHECK,XP(H)::R(D)+K(G),XR(g)
- B(d);CHECK,OGATE::B(A),XB(d)
- Q(b);N_PINS(C)::S(C)
- R(g);::R(D)+K(G)
- P(k);OGATE::P(H)
- P(k);::R(D)+K(G)
- Refutation
- Q(b);CHECK,N_PINS(C)
- Try
- Q(J);CHECK
- Vars
- K(j);N_SPINB(d),S_FLIGHT::QAR1(J)
- Refutation
- K(j);N_SPINB(d),P-FLIGHT,XB(K)
- Try
- Q(J);CHECK
- Vars
- K(j);N_SPINB(d),S_FLIGHT::QAR1(J)
- Refutation
- K(j);N_SPINB(d),P-FLIGHT,XB(K)
- Try
- Actual
- R(E);
- Threat
- R(D)+K(G)
- Vars
- Q(b);CHECK,XS(C)::R(D)+K(G),XQ(b)
- R(f);CHECK,P_PINP(H),XP(F)::R(D)+K(G),XR(f)
- R(g);CHECK,XP(H)::R(D)+K(G),XR(g)
- B(d);CHECK,OGATE::B(A),XB(d)
- Q(b);N_PINS(C),XR(E)::S(C)
- Q(b);N_PINS(C)::S(C)
- Q(b);N_PINS(C),P_PINR(D)::S(C)
- S(a);N_PINS(C)::S(C)
- S(c);N_PINS(C)::S(C)
- S(c);N_PINP(F),N_SPINB(d),P_PINP(H)::P(F)
- P(k);OGATE::P(H)
Developed and maintained by Brian Stephenson.
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