MESON Chess Problem Database
Problem Display
PID: 210873 (8/5p2/3K4/2N5/n1pk2p1/Q1b2PP1/2RPp3/3bN3 w - - 0 1)
Schuld, Henk L
The Observer, 1921
(First published on Sun May 1 1921)
#2
8 + 8
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Bxc2
- 2.Sxc2#
- 1...Ba1
- 2.Qe3#
- 1...Bb2
- 2.Qe3#
- 1...Bxd2
- 2.Rxd2#
- 1...Bb4
- 2.Qe3#
- 1...Ba5
- 2.Qe3#
- 1...Sb2
- 2.Qxc3#
- 1...Sxc5
- 2.Qxc5#
- 2.Qxc3#
- 1...Sb6
- 2.Qxc3#
- 1...gxf3
- 2.Sxf3#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Bxc2
- Tries
- 1.Ra2?
- 1...Bxd2
- 2.Rxd2#
- 1...Sxc5
- 2.Qxc5#
- 2.Qxc3#
- 1...gxf3
- 2.Sxf3#
- 1...Bc2
- 2.Sxc2#
- 1...Ba1
- 2.Qe3#
- 1...Bb2
- 2.Qe3#
- 1...Bb4
- 2.Qe3#
- 1...Ba5
- 2.Qe3#
- 1...Sb2
- 2.Qxc3#
- 1...Sb6
- 2.Qxc3#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Bb3!
- 1...Bxd2
- 1.Rb2?
- 1...Bxb2
- 2.Qe3#
- 1...Bxd2
- 2.Rxd2#
- 1...Sxb2
- 2.Qxc3#
- 1...Sxc5
- 2.Qxc5#
- 2.Qxc3#
- 1...gxf3
- 2.Sxf3#
- 1...Bc2
- 2.Sxc2#
- 1...Bb4
- 2.Qe3#
- 1...Ba5
- 2.Qe3#
- 1...Sb6
- 2.Qxc3#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Bb3!
- 1...Bxb2
- 1.Qb4?
- threat
- 2.Sb3#
- 1...Bxc2
- 2.Sxc2#
- 1...Bxd2
- 2.Qxd2#
- 1...Sxc5
- 2.Qxc3#
- 2.Qxc5#
- 1...gxf3
- 2.Sxf3#
- 1...Bxb4!
- threat
- 1.Qb3?
- 1...Bxc2
- 2.Sxc2#
- 1...Bxd2
- 2.Rxd2#
- 2.Rxc4#
- 1...Sxc5
- 2.Qxc3#
- 1...gxf3
- 2.Sxf3#
- 1...Ba1
- 2.Rxc4#
- 2.Qxc4#
- 2.Qe3#
- 1...Bb2
- 2.Rxc4#
- 2.Qxc4#
- 2.Qe3#
- 1...Bb4
- 2.Rxc4#
- 2.Qxc4#
- 2.Qe3#
- 1...Ba5
- 2.Rxc4#
- 2.Qxc4#
- 2.Qe3#
- 1...Sb2
- 2.Qxc3#
- 1...Sb6
- 2.Qxc3#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...cxb3!
- 1...Bxc2
- 1.dxc3+?
- 1...Sxc3
- 2.Qxc3#
- 1...Ke3!
- 1...Sxc3
- 1.Ra2?
- Keys
- 1.Qc1!
- 1...Bxc2
- 2.Sxc2#
- 1...Bxd2
- 2.Qxd2#
- 1...Sxc5
- 2.dxc3#
- 1...gxf3
- 2.Sxf3#
- 1...Ba1
- 2.Rxc4#
- 1...Bb2
- 2.Rxc4#
- 1...Bb4
- 2.Rxc4#
- 1...Ba5
- 2.Rxc4#
- 1...Sb2
- 2.dxc3#
- 1...Sb6
- 2.dxc3#
- 1...f5
- 2.Se6#
- 1...f6
- 2.Se6#
- 1...Bxc2
- 1.Qc1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(a);XR(B)::S(A),XB(a)
- B(c);OGATE::QAB1(D)
- B(c);OGATE,XP(C)::R(B),XB(c)
- B(c);OGATE,P_PINS(G)::QAB1(D)
- S(d);N_GUARD::QAB1(D),XB(c)
- P(g);XP(E)::S(A),XP(g)
- P(h);N_GUARD::S(G)
- Tries
- Try
- R(B);
- Vars
- B(c);OGATE,XP(C)::R(B),XB(c)
- P(g);XP(E)::S(A),XP(g)
- B(a);N_GUARD::S(A),XB(a)
- B(c);OGATE::QAB1(D)
- B(c);OGATE,P_PINS(G)::QAB1(D)
- S(d);N_GUARD::QAB1(D),XB(c)
- P(h);N_GUARD::S(G)
- Refutation
- B(a);
- Try
- R(B);
- Vars
- B(c);OGATE,XR(B)::QAB1(D)
- B(c);OGATE,XP(C)::R(B),XB(c)
- S(d);N_GUARD,XR(B)::QAB1(D),XB(c)
- P(g);XP(E)::S(A),XP(g)
- B(a);N_GUARD::S(A),XB(a)
- B(c);OGATE,P_PINS(G)::QAB1(D)
- B(c);OGATE::QAB1(D)
- S(d);N_GUARD::QAB1(D),XB(c)
- P(h);N_GUARD::S(G)
- Refutation
- B(a);
- Try
- Q(D);P_PINP(e)
- Threat
- S(G)
- Vars
- B(a);XR(B)::S(A),XB(a)
- B(c);OGATE,XP(C)::QAR2(D),XB(c)
- P(g);XP(E)::S(A),XP(g)
- Refutation
- B(c);N_SPINP(e),P_PINS(G),XQ(D)
- Try
- Q(D);
- Vars
- B(a);XR(B)::S(A),XB(a)
- S(d);N_GUARD,XS(G)::QAB1(D),XB(c)
- P(g);XP(E)::S(A),XP(g)
- S(d);N_GUARD::QAB1(D),XB(c)
- P(h);N_GUARD::S(G)
- Refutation
- P(e);XQ(D)
- Try
- P(C);CHECK,XB(c)
- Vars
- S(d);OGATE,XP(C)::QAB1(D),XS(d)
- Refutation
- K(f);S_FLIGHT
- Try
- Actual
- Q(D);
- Vars
- B(a);XR(B)::S(A),XB(a)
- B(c);OGATE,XP(C)::QAR2(D),XB(c)
- S(d);N_GUARD,XS(G)::P(C),XB(c)
- P(g);XP(E)::S(A),XP(g)
- B(c);OGATE::R1(B),XP(e)
- B(c);OGATE,P_PINS(G)::R1(B),XP(e)
- S(d);N_GUARD::P(C),XB(c)
- P(h);N_GUARD::S(G)
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