MESON Chess Problem Database
Problem Display
PID: 21702 (4NKb1/pB6/3p4/1n1Pk2r/3N2R1/B4R1r/4P3/4Q3 w - - 0 1)
Heydon, Joseph Kentigern
1st Prize, Good Companions (November), 1920
#2
10 + 7
| 3132 | The Good Companion Two-Mover | 1922 |
| 3360 | Simple Two-move Themes | 1924 |
| 56 | The Problemist | 2010 |
SOLUTION
- SOUND
- Sets
- 1...Rh1
- 2.Re3#
- 2.Qg3#
- 1...Rh2
- 2.Re3#
- 2.Qg3#
- 1...Rxf3+
- 2.exf3#
- 1...Rg3
- 2.Qxg3#
- 1...R3h4
- 2.Re3#
- 2.Qg3#
- 1...R5h4
- 2.Rf5#
- 1...Rf5+
- 2.Rxf5#
- 1...Rh6
- 2.Rf5#
- 1...Rh7
- 2.Rf5#
- 1...Rh8
- 2.Rf5#
- 1...Sc3
- 2.Bxd6#
- 1...Sxd4
- 2.Bxd6#
- 1...Sc7
- 2.Bxd6#
- 1...Rh1
- Tries
- 1.Sf6?
- threat
- 2.Sc6#
- 2.Sd7#
- 2.Re4#
- 1...Bxd5
- 2.Sd7#
- 1...Sxd4
- 2.Sd7#
- 2.Re4#
- 1...Rf5
- 2.Rxf5#
- 1...R3h4
- 2.Sc6#
- 2.Sd7#
- 2.Qg3#
- 1...R5h4
- 2.Sc6#
- 2.Sd7#
- 2.Rf5#
- 1...Rh7
- 2.Sc6#
- 2.Rf5#
- 2.Re4#
- 1...Be6
- 2.Sc6#
- 2.Re4#
- 1...Bh7
- 2.Sc6#
- 2.Sd7#
- 1...Sc3
- 2.Sc6#
- 2.Sd7#
- 1...Rxf3!
- threat
- 1.Qd2?
- threat
- 2.Sc6#
- 2.Qe3#
- 2.Qf4#
- 1...Rf5+
- 2.Rxf5#
- 1...Bxd5
- 2.Qf4#
- 1...Sxd4
- 2.Bxd6#
- 2.Qe3#
- 2.Qf4#
- 2.Qxd4#
- 1...Bh7
- 2.Sc6#
- 2.Qf4#
- 1...Sc3
- 2.Sc6#
- 2.Bxd6#
- 2.Qf4#
- 1...Rxf3+!
- threat
- 1.Qh4?
- threat
- 2.Re4#
- 2.Qf6#
- 1...Rf5+
- 2.Rxf5#
- 1...R3xh4
- 2.Re3#
- 1...R5xh4
- 2.Rf5#
- 1...Bxd5
- 2.Qf6#
- 1...Rg5
- 2.Re4#
- 2.Rxg5#
- 2.Qxg5#
- 1...Rh6
- 2.Rf5#
- 2.Re4#
- 2.Rg5#
- 2.Qg5#
- 1...Bh7
- 2.Qf6#
- 2.Qe7#
- 1...Sc3
- 2.Bxd6#
- 2.Qf6#
- 1...Rxf3+!
- threat
- 1.Qc1?
- threat
- 2.Qe3#
- 2.Qf4#
- 1...Rf5+
- 2.Rxf5#
- 1...Bxd5
- 2.Qf4#
- 1...Bh7
- 2.Qf4#
- 1...Sc3
- 2.Bxd6#
- 2.Qf4#
- 1...Rxf3+!
- threat
- 1.Sf6?
- Keys
- 1.e4!
- threat
- 2.Sc6#
- 1...Rxf3+
- 2.Sxf3#
- 1...Rf5+
- 2.exf5#
- 1...Kxd4
- 2.e5#
- 1...Bxd5
- 2.exd5#
- 1...Sxd4
- 2.Bxd6#
- threat
- 1.e4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 7
- Sets
- R(a);CHECK,OGATE,XR(D)::QAR(A)+P(B),XR(a)
- R(a);N_GUARD::QAB(A),XR(a)
- R(d);N_GUARD::R1(D)
- R(d);CHECK,N_GUARD::R1(D),XR(d)
- S(b);N_GUARD::B(C),XP(e)
- S(b);N_GUARD,XS(E)::B(C),XP(e)
- Tries
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- B(g);XP(G)::S(I)
- R(d);N_GUARD,P_PINS(I)::R1(D),XR(d)
- Refutation
- R(a);P_PINS(I),XR(D)
- Try
- Q(A);
- Threat
- DUALS(3)
- Vars
- R(d);CHECK,N_GUARD::R1(D),XR(d)
- B(g);XP(G)::QAB1(A)
- Refutation
- R(a);CHECK,XR(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,N_GUARD::R1(D),XR(d)
- R(a);N_GUARD,XQ(A)::R(D)
- R(d);N_GUARD,XQ(A)::R1(D)
- B(g);XP(G)::QAB1(A)
- Refutation
- R(a);CHECK,XR(D)
- Try
- Q(A);
- Threat
- DUALS(2)
- Vars
- R(d);CHECK,N_GUARD::R1(D),XR(d)
- B(g);XP(G)::QAB1(A)
- B(g);::QAB1(A)
- Refutation
- R(a);CHECK,XR(D)
- Try
- Actual
- P(B);
- Threat
- S(E)
- Vars
- R(a);CHECK,XR(D)::S(E),XR(a)
- R(d);CHECK,OGATE::QAR(A)+P(B),XR(d)
- K(c);OGATE,S_FLIGHT,XS(E)::R(F)+P(B)
- B(g);OGATE,XP(G)::QAR(A)+P(B),XB(g)
- S(b);N_GUARD,SBLOCK,XS(E)::B(C),XP(e)
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