MESON Chess Problem Database
Problem Display
PID: 65276 (8/2p2p1B/2Q2P1B/1p1Nk2K/1Pp3R1/2Pn4/3Pq1pn/4RbN1 w - - 0 1)
Jakab, Arpad
Good Companions (February), 1922
#2
12 + 10
| 3132 | The Good Companion Two-Mover | 1922 |
SOLUTION
- SOUND
- Sets
- 1...Qxe1
- 2.Rg5#
- 1...Qe3
- 2.Rxe3#
- 2.Rg5#
- 1...Qe4
- 2.Rexe4#
- 2.Rgxe4#
- 2.Rg5#
- 1...Sf3
- 2.Sxf3#
- 1...Sxg4
- 2.Sf3#
- 1...Sc1
- 2.Bf4#
- 1...Sxe1
- 2.Bf4#
- 1...Sb2
- 2.Bf4#
- 1...Sf2
- 2.Bf4#
- 1...Sxb4
- 2.Bf4#
- 1...Sf4+
- 2.Bxf4#
- 1...Sc5
- 2.Bf4#
- 1...Qxe1
- Tries
- 1.Kh4?
- threat
- 2.Rg5#
- 1...Sf3+
- 2.Sxf3#
- 1...Sxg4
- 2.Sf3#
- 1...Qe4
- 2.Rexe4#
- 2.Rgxe4#
- 1...Qxe1+!
- threat
- 1.Sxe2?
- threat
- 2.Re4#
- 2.Rg5#
- 1...Sf4+
- 2.Bxf4#
- 1...Bxe2
- 2.Rxe2#
- 1...g1Q
- 2.Re4#
- 1...g1R
- 2.Re4#
- 1...Sf3
- 2.Re4#
- 1...Sf2
- 2.Bf4#
- 2.Rg5#
- 1...Sc5
- 2.Bf4#
- 2.Rg5#
- 1...Sxg4!
- threat
- 1.Sb6?
- threat
- 2.Sd7#
- 1...Sf4+
- 2.Bxf4#
- 1...Sc5
- 2.Bf4#
- 1...cxb6!
- threat
- 1.Sxc7?
- 1...Sf4+
- 2.Bxf4#
- 1...Sxg4
- 2.Sf3#
- 1...Sxe1
- 2.Bf4#
- 1...Sxb4
- 2.Bf4#
- 1...Qe3
- 2.Rxe3#
- 1...Qe4
- 2.Rexe4#
- 2.Rgxe4#
- 1...Sf3
- 2.Sxf3#
- 1...Sc1
- 2.Bf4#
- 1...Sb2
- 2.Bf4#
- 1...Sf2
- 2.Bf4#
- 1...Sc5
- 2.Bf4#
- 1...Qxe1!
- 1...Sf4+
- 1.Se7?
- 1...Sf4+
- 2.Bxf4#
- 1...Sxg4
- 2.Sf3#
- 1...Sxe1
- 2.Bf4#
- 1...Sxb4
- 2.Bf4#
- 1...Qe3
- 2.Rxe3#
- 1...Qe4
- 2.Rexe4#
- 2.Rgxe4#
- 1...Sf3
- 2.Sxf3#
- 1...Sc1
- 2.Bf4#
- 1...Sb2
- 2.Bf4#
- 1...Sf2
- 2.Bf4#
- 1...Sc5
- 2.Bf4#
- 1...Qxe1!
- 1...Sf4+
- 1.Be3?
- threat
- 2.Bd4#
- 1...Sf4+
- 2.Bxf4#
- 1...Qxe3
- 2.Rxe3#
- 2.Rg5#
- 1...Sf3
- 2.Re4#
- 1...Qxg4+!
- threat
- 1.Bg5?
- 1...Sf4+
- 2.Bxf4#
- 1...Sxg4
- 2.Sf3#
- 1...Sxe1
- 2.Bf4#
- 1...Sxb4
- 2.Bf4#
- 1...Qe3
- 2.Rxe3#
- 1...Qe4
- 2.Rexe4#
- 2.Rgxe4#
- 1...Sf3
- 2.Sxf3#
- 1...Sc1
- 2.Bf4#
- 1...Sb2
- 2.Bf4#
- 1...Sf2
- 2.Bf4#
- 1...Sc5
- 2.Bf4#
- 1...Qxe1!
- 1...Sf4+
- 1.Bxd3?
- threat
- 2.Bf4#
- 1...Qe4
- 2.Rg5#
- 1...cxd3!
- threat
- 1.Bg6?
- 1...Sf4+
- 2.Bxf4#
- 1...Qxe1
- 2.Rg5#
- 1...Sxg4
- 2.Sf3#
- 1...Sxe1
- 2.Bf4#
- 1...Sxb4
- 2.Bf4#
- 1...Qe3
- 2.Rxe3#
- 2.Rg5#
- 1...Qe4
- 2.Rexe4#
- 2.Rgxe4#
- 2.Rg5#
- 1...Sf3
- 2.Sxf3#
- 1...Sc1
- 2.Bf4#
- 1...Sb2
- 2.Bf4#
- 1...Sf2
- 2.Bf4#
- 1...Sc5
- 2.Bf4#
- 1...fxg6+!
- 1...Sf4+
- 1.Kh4?
- Keys
- 1.Se3!
- 1...Qxg4+
- 2.Sxg4#
- 1...Sf4+
- 2.Bxf4#
- 1...Qxe1
- 2.Re4#
- 1...Qxd2
- 2.Sxc4#
- 2.Re4#
- 1...Qxe3
- 2.Rxe3#
- 1...Sxg4
- 2.Sxg4#
- 1...Sxe1
- 2.Bf4#
- 1...Sxb4
- 2.Bf4#
- 1...Qd1
- 2.Sxc4#
- 1...Qf3
- 2.Sxc4#
- 1...Qf2
- 2.Sxc4#
- 2.Re4#
- 1...Sf3
- 2.Re4#
- 1...Sc1
- 2.Bf4#
- 1...Sb2
- 2.Bf4#
- 1...Sf2
- 2.Bf4#
- 1...Sc5
- 2.Bf4#
- 1...Qxg4+
- 1.Se3!
There are these versions: 201340
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 3
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Q(b);N_PINR(F),N_SPINQ(b),XR(A)::R(F)
- S(d);N_GUARD,N_PINR(F)::S(B),XS(d)
- S(d);N_GUARD,XR(F)::S(B)
- S(e);N_GUARD::B(K)
- S(e);N_GUARD,N_SPINQ(b),XR(A)::B(K)
- S(e);N_GUARD,XP(E)::B(K)
- S(e);CHECK,N_GUARD::B(K),XS(e)
- Tries
- Try
- K(H);N_SPINR(F),P-FLIGHT
- Threat
- R(F)
- Vars
- S(d);CHECK,N_GUARD::S(B),XS(d)
- S(d);N_GUARD,XR(F)::S(B)
- Refutation
- Q(b);CHECK,N_SPINQ(b),XR(A)
- Try
- S(B);N_SPINR(F),XQ(b)
- Threat
- DUALS(2)
- Vars
- S(e);CHECK,N_GUARD::B(K),XS(e)
- B(a);OGATE,P_PINR(F),P_SPINB(a),XS(B)::R(A),XB(a)
- P(c);::R1(F)
- S(d);::R1(F)
- Refutation
- S(d);XR(F)
- Try
- S(G);
- Threat
- S(G)
- Vars
- S(e);CHECK,N_GUARD::B(K),XS(e)
- S(e);N_GUARD::B(K)
- Refutation
- P(i);XS(G)
- Try
- S(G);XP(i)
- Vars
- S(e);CHECK,N_GUARD::B(K),XS(e)
- S(d);N_GUARD,XR(F)::S(B)
- S(e);N_GUARD,N_SPINQ(b),XR(A)::B(K)
- S(e);N_GUARD,XP(E)::B(K)
- Q(b);N_PINR(F),OGATE::R(A),XQ(b)
- S(d);N_GUARD,N_PINR(F)::S(B),XS(d)
- S(e);N_GUARD::B(K)
- Refutation
- Q(b);N_PINR(F),N_SPINQ(b),XR(A)
- Try
- S(G);
- Vars
- S(e);CHECK,N_GUARD::B(K),XS(e)
- S(d);N_GUARD,XR(F)::S(B)
- S(e);N_GUARD,N_SPINQ(b),XR(A)::B(K)
- S(e);N_GUARD,XP(E)::B(K)
- Q(b);N_PINR(F),OGATE::R(A),XQ(b)
- S(d);N_GUARD,N_PINR(F)::S(B),XS(d)
- S(e);N_GUARD::B(K)
- Refutation
- Q(b);N_PINR(F),N_SPINQ(b),XR(A)
- Try
- B(K);N_PINQ(b)
- Threat
- B(K)
- Vars
- S(e);CHECK,N_GUARD::B(K),XS(e)
- S(d);N_PINR(F)::R1(F)
- Refutation
- Q(b);CHECK,XR(F)
- Try
- B(K);
- Vars
- S(e);CHECK,N_GUARD::B(K),XS(e)
- S(d);N_GUARD,XR(F)::S(B)
- S(e);N_GUARD,N_SPINQ(b),XR(A)::B(K)
- S(e);N_GUARD,XP(E)::B(K)
- Q(b);N_PINR(F),OGATE::R(A),XQ(b)
- S(d);N_GUARD,N_PINR(F)::S(B),XS(d)
- S(e);N_GUARD::B(K)
- Refutation
- Q(b);N_PINR(F),N_SPINQ(b),XR(A)
- Try
- B(L);XS(e)
- Threat
- B(K)
- Vars
- Q(b);N_PINR(F)::R(F)
- Refutation
- P(f);XB(L)
- Try
- B(L);
- Vars
- S(e);CHECK,N_GUARD::B(K),XS(e)
- Q(b);N_PINR(F),N_SPINQ(b),XR(A)::R(F)
- S(d);N_GUARD,XR(F)::S(B)
- S(e);N_GUARD,N_SPINQ(b),XR(A)::B(K)
- S(e);N_GUARD,XP(E)::B(K)
- S(d);N_GUARD,N_PINR(F)::S(B),XS(d)
- S(e);N_GUARD::B(K)
- Refutation
- P(j);CHECK,XB(L)
- Try
- Actual
- S(G);N_PINQ(b)
- Vars
- Q(b);CHECK,XR(F)::R(A)+S(G),DCHECK,XQ(b)
- S(e);CHECK,N_GUARD::B(K),XS(e)
- Q(b);N_PINR(F),XR(A)::R1(F)
- Q(b);N_PINR(F),OGATE,P_SPINQ(b),XS(G)::R(A),XQ(b)
- S(d);XR(F)::S(G),XS(d)
- S(e);N_GUARD,XR(A)::B(K)
- S(e);N_GUARD,XP(E)::B(K)
- Q(b);::R(A)+S(G),DCHECK,XP(f)
- S(d);N_PINR(F)::R1(F)
- S(e);N_GUARD::B(K)
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