MESON Chess Problem Database
Problem Display
PID: 2305 (8/2npNpn1/5R2/2P1k1p1/6K1/2P4P/4pR2/7Q w - - 0 1)
Ellerman, Arnoldo
5th HM., Good Companions (April Complete Blocks), 1920
#2
8 + 7
| 3132 | The Good Companion Two-Mover | 1922 |
| 133 | The Problemist Supplement | 2013 |
SOLUTION
- SOUND
- Sets
- 1...Sb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sa6
- 2.Qd5#
- 1...Sce6
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sce8
- 2.Qd5#
- 1...Sf5
- 2.R2xf5#
- 1...Sh5
- 2.R2f5#
- 1...Sge6
- 2.R2f5#
- 2.R6f5#
- 1...Sge8
- 2.R2f5#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...d5
- 2.Sc6#
- 1...d6
- 2.Sc6#
- 1...Sb5
- Tries
- 1.R2f4?
- threat
- 2.Qe4#
- 1...Sf5
- 2.R4xf5#
- 1...e1Q
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...d5
- 2.Sc6#
- 1...gxf4!
- threat
- 1.R6f5+?
- 1...Ke6
- 2.Rxe2#
- 2.Qe4#
- 1...Sxf5!
- 1...Ke6
- 1.Rd6?
- threat
- 2.Rxe2#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Re2#
- 2.Qxe1#
- 1...e1B
- 2.Re2#
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Sd5
- 2.Qxd5#
- 1...Sce6
- 2.Rd5#
- 2.Qd5#
- 1...Sf5
- 2.Rxf5#
- 1...Sge6
- 2.Rf5#
- 1...f5+!
- threat
- 1.Rh6?
- threat
- 2.Rxe2#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Re2#
- 2.Qxe1#
- 1...e1B
- 2.Re2#
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Sd5
- 2.Qxd5#
- 1...Sf5
- 2.Rxf5#
- 1...f5+!
- threat
- 1.Rxf7?
- threat
- 2.Rxe2#
- 1...Ke6
- 2.Qe4#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Re2#
- 2.Qxe1#
- 1...e1B
- 2.Re2#
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Sd5
- 2.Qxd5#
- 1...Sf5!
- threat
- 1.h4?
- 1...Sf5
- 2.R2xf5#
- 1...e1Q
- 2.Qxe1#
- 1...e1S
- 2.Qxe1#
- 1...e1B
- 2.Qxe1#
- 1...e1R
- 2.Qxe1#
- 1...Sb5
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sa6
- 2.Qd5#
- 1...Sce6
- 2.Qd5#
- 1...Sa8
- 2.Qd5#
- 1...Sce8
- 2.Qd5#
- 1...Sh5
- 2.R2f5#
- 1...Sge6
- 2.R2f5#
- 2.R6f5#
- 1...Sge8
- 2.R2f5#
- 1...d5
- 2.Sc6#
- 1...d6
- 2.Sc6#
- 1...gxh4!
- 1...Sf5
- 1.R2f4?
- Keys
- 1.Re6+!
- 1...Kxe6
- 2.Qe4#
- 1...Scxe6
- 2.Qd5#
- 1...Sgxe6
- 2.Rf5#
- 1...dxe6
- 2.Sc6#
- 1...fxe6
- 2.Sg6#
- 1...Kxe6
- 1.Re6+!
FEATURES
- Static
- TYPE = CHECKING_KEY
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 14
- Sets
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::R1(B),XS(g)
- S(g);N_GUARD::R1(B)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- P(e);N_GUARD::S(H)
- Tries
- Try
- R(B);
- Threat
- QAR1(A)
- Vars
- S(g);N_GUARD::R1(B),XS(g)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XR(a)
- P(e);N_GUARD::S(H)
- Refutation
- P(c);XR(B)
- Try
- R(G);CHECK
- Refutation
- S(g);XR(G)
- Try
- R(G);
- Threat
- R(B),XP(a)
- Vars
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::R1(B),XS(g)
- S(g);N_GUARD::R1(B)
- Refutation
- P(f);CHECK
- Try
- R(G);
- Threat
- R(B),XP(a)
- Vars
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::R1(B),XS(g)
- Refutation
- P(f);CHECK
- Try
- R(G);XP(f)
- Threat
- R(B),XP(a)
- Vars
- K(b);P-FLIGHT::QAR2(A)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(d);N_GUARD::QAR1(A),XS(d)
- Refutation
- S(g);
- Try
- P(D);
- Vars
- S(g);N_GUARD::R1(B),XS(g)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- S(d);N_GUARD::QAR1(A)
- S(d);N_GUARD::QAR1(A),XS(d)
- S(g);N_GUARD::R1(B)
- P(e);N_GUARD::S(H)
- Refutation
- P(c);XP(D)
- Try
- Actual
- R(G);CHECK
- Vars
- K(b);P-FLIGHT,XR(G)::QAR2(A)
- S(d);XR(G)::QAR1(A)
- S(g);SBLOCK,XR(G)::R1(B)
- P(e);SBLOCK,XR(G)::S(H)
- P(f);SBLOCK,XR(G)::S(H)
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