MESON Chess Problem Database
Problem Display
PID: 106784 (2rN4/4p3/8/P1kp4/3RbQ2/2N1Pp2/5K2/8 w - - 0 1)
Andrade, Barry Jack da Costa
The Field, 1955
(First published on Thu Jun 23 1955)
#2
7 + 6
SOLUTION
- SOUND
- Sets
- 1...Rc6
- 2.Sb7#
- 1...Rc7
- 2.Qxc7#
- 1...Ra8
- 2.Qc7#
- 1...Rb8
- 2.Qc7#
- 1...Rxd8
- 2.Qc7#
- 1...Bb1
- 2.Rxd5#
- 1...Bc2
- 2.Rxd5#
- 1...Bd3
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bg6
- 2.Rxd5#
- 1...Bh7
- 2.Rxd5#
- 1...e5
- 2.Qf8#
- 1...e6
- 2.Qf8#
- 1...Rc6
- Tries
- 1.Ke1?
- 1...Rxd8
- 2.Qc7#
- 1...e5
- 2.Qf8#
- 1...Rc6
- 2.Sb7#
- 1...Rc7
- 2.Qxc7#
- 1...Ra8
- 2.Qc7#
- 1...Rb8
- 2.Qc7#
- 1...Bb1
- 2.Rxd5#
- 1...Bc2
- 2.Rxd5#
- 1...Bd3
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bg6
- 2.Rxd5#
- 1...Bh7
- 2.Rxd5#
- 1...e6
- 2.Qf8#
- 1...f2+!
- 1...Rxd8
- 1.Kg1?
- 1...Rxd8
- 2.Qc7#
- 1...e5
- 2.Qf8#
- 1...Rc6
- 2.Sb7#
- 1...Rc7
- 2.Qxc7#
- 1...Ra8
- 2.Qc7#
- 1...Rb8
- 2.Qc7#
- 1...Bb1
- 2.Rxd5#
- 1...Bc2
- 2.Rxd5#
- 1...Bd3
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bg6
- 2.Rxd5#
- 1...Bh7
- 2.Rxd5#
- 1...e6
- 2.Qf8#
- 1...f2+!
- 1...Rxd8
- 1.Kg3?
- 1...Rxd8
- 2.Qc7#
- 1...e5
- 2.Qf8#
- 1...Rc6
- 2.Sb7#
- 1...Rc7
- 2.Qxc7#
- 1...Ra8
- 2.Qc7#
- 1...Rb8
- 2.Qc7#
- 1...Bb1
- 2.Rxd5#
- 1...Bc2
- 2.Rxd5#
- 1...Bd3
- 2.Rxd5#
- 1...Bf5
- 2.Rxd5#
- 1...Bg6
- 2.Rxd5#
- 1...Bh7
- 2.Rxd5#
- 1...e6
- 2.Qf8#
- 1...f2!
- 1...Rxd8
- 1.Sxe4+?
- 1...dxe4
- 2.Qe5#
- 1...Kb5!
- 1...dxe4
- 1.Qe5?
- threat
- 2.Qxe7#
- 1...Rxd8
- 2.Qc7#
- 1...Rc6
- 2.Sb7#
- 1...Rc7
- 2.Qxc7#
- 1...e6!
- threat
- 1.Qh6?
- threat
- 2.Sb7#
- 2.Qb6#
- 1...Rxd8
- 2.Qb6#
- 1...e6
- 2.Qf8#
- 1...Rc6
- 2.Sb7#
- 2.Qxc6#
- 1...Rc7
- 2.Qb6#
- 1...Rb8
- 2.Qc6#
- 1...Bg6!
- threat
- 1.Qb8?
- threat
- 2.Sa4#
- 2.Qb4#
- 2.Qb6#
- 1...Rxd8
- 2.Qc7#
- 2.Qb6#
- 1...Rc7
- 2.Qxc7#
- 2.Qb4#
- 2.Qb6#
- 1...Rc6
- 2.Sa4#
- 2.Sb7#
- 2.Qb4#
- 1...Bc2
- 2.Qb4#
- 2.Qb6#
- 1...Rxb8!
- threat
- 1.Qf6?
- threat
- 2.Sb7#
- 2.Qxe7#
- 2.Qb6#
- 1...Rxd8
- 2.Qb6#
- 1...e6
- 2.Qe7#
- 2.Qf8#
- 1...Rc6
- 2.Sb7#
- 2.Qxc6#
- 1...Rc7
- 2.Qb6#
- 1...Rb8
- 2.Qxe7#
- 2.Qc6#
- 1...e5
- 2.Sb7#
- 2.Qe7#
- 2.Qb6#
- 2.Qf8#
- 1...exf6!
- threat
- 1.Ke1?
- Keys
- 1.Ra4!
- 1...Rxd8
- 2.Qc7#
- 1...e5
- 2.Qf8#
- 1...Rc6
- 2.Sb7#
- 1...Rc7
- 2.Qxc7#
- 1...Ra8
- 2.Qc7#
- 1...Rb8
- 2.Qc7#
- 1...Bb1
- 2.Qb4#
- 1...Bc2
- 2.Qb4#
- 1...Bd3
- 2.Qb4#
- 1...Bf5
- 2.Qb4#
- 1...Bg6
- 2.Qb4#
- 1...Bh7
- 2.Qb4#
- 1...d4
- 2.exd4#
- 1...e6
- 2.Qf8#
- 1...Rxd8
- 1.Ra4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 6
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(E),XR(f)
- R(f);N_GUARD::QAR2(E)
- R(f);N_GUARD,XS(G)::QAR2(E)
- B(b);N_GUARD::R1(D),XP(d)
- P(e);OGATEB::QAB(E)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- R(f);N_GUARD,XS(G)::QAR2(E)
- P(e);OGATEB::QAB(E)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(E),XR(f)
- R(f);N_GUARD::QAR2(E)
- B(b);N_GUARD::R1(D),XP(d)
- Refutation
- P(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- R(f);N_GUARD,XS(G)::QAR2(E)
- P(e);OGATEB::QAB(E)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(E),XR(f)
- R(f);N_GUARD::QAR2(E)
- B(b);N_GUARD::R1(D),XP(d)
- Refutation
- P(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- R(f);N_GUARD,XS(G)::QAR2(E)
- P(e);OGATEB::QAB(E)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(E),XR(f)
- R(f);N_GUARD::QAR2(E)
- B(b);N_GUARD::R1(D),XP(d)
- Refutation
- P(a);
- Try
- S(B);CHECK,XB(b)
- Vars
- P(d);XS(B)::QAR2(E)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(E);P_PINP(d)
- Threat
- QAB(E),XP(e)
- Vars
- R(f);N_GUARD,XS(G)::QAR2(E)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(E),XR(f)
- Refutation
- P(e);
- Try
- Q(E);
- Threat
- DUALS(2)
- Vars
- R(f);XS(G)::QAB1(E)
- P(e);OGATEB::QAB(E)
- R(f);::QAB1(E)
- R(f);N_GUARD::QAR1(E)
- Refutation
- B(b);
- Try
- Q(E);
- Threat
- DUALS(3)
- Refutation
- R(f);XQ(E)
- Try
- Q(E);
- Threat
- DUALS(3)
- Vars
- R(f);XS(G)::QAB1(E)
- R(f);::QAB1(E)
- Refutation
- P(e);XQ(E)
- Try
- Actual
- R(D);
- Vars
- R(f);N_GUARD,XS(G)::QAR2(E)
- P(e);OGATEB::QAB(E)
- R(f);SBLOCK::S(G)
- R(f);N_GUARD::QAR2(E),XR(f)
- R(f);N_GUARD::QAR2(E)
- B(b);OGATE::QAB1(E)
- P(d);OGATE::P(C),XP(d)
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