MESON Chess Problem Database
Problem Display
PID: 21589 (B1nR4/1rp4p/2k3bQ/PN3N2/p1P5/B3p3/2K1n2p/8 w - - 0 1)
Stewart, John
Western Daily Mercury, 1919
(First published on Fri Nov 7 1919)
#2
9 + 10
| 3360 | Simple Two-move Themes | 1924 |
| 3098 | FIDE Album (1914-1944) (I) | 1971 |
| 56 | The Problemist | 2005 |
| 15239 | Valois Notebooks | 2020 |
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Sd4#
- 1...Sg1
- 2.Sd4#
- 1...Sc3
- 2.Sd4#
- 1...Sg3
- 2.Sd4#
- 1...Sd4+
- 2.Sxd4#
- 1...Sf4
- 2.Sd4#
- 1...Sb6
- 2.Sa7#
- 1...Sd6
- 2.Sa7#
- 1...Sa7
- 2.Sxa7#
- 1...Se7
- 2.Sa7#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Sc1
- Tries
- 1.Kd1?
- 1...h1Q+
- 2.Qxh1#
- 1...h1R+
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...Sc1
- 2.Sbd4#
- 2.Sfd4#
- 1...Sg1
- 2.Sbd4#
- 2.Sfd4#
- 1...Sg3
- 2.Sbd4#
- 2.Sfd4#
- 1...Sd4
- 2.Sbxd4#
- 2.Sfxd4#
- 1...Sf4
- 2.Sbd4#
- 2.Sfd4#
- 1...Sb6
- 2.Sa7#
- 2.Se7#
- 1...Sd6
- 2.Sa7#
- 2.Se7#
- 1...Sa7
- 2.Sxa7#
- 2.Se7#
- 1...Se7
- 2.Sa7#
- 2.Sxe7#
- 1...Sc3+!
- 1...h1Q+
- 1.Bb4?
- 1...Sd4+
- 2.Sxd4#
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Sc1
- 2.Sd4#
- 1...Sg1
- 2.Sd4#
- 1...Sc3
- 2.Sd4#
- 1...Sg3
- 2.Sd4#
- 1...Sf4
- 2.Sd4#
- 1...Sb6
- 2.Sa7#
- 1...Sd6
- 2.Sa7#
- 1...Sa7
- 2.Sxa7#
- 1...Se7
- 2.Sa7#
- 1...a3!
- 1...Sd4+
- 1.Qxe3?
- threat
- 2.Qc5#
- 2.Qf3#
- 2.Qe4#
- 1...Sd4+
- 2.Sxd4#
- 1...h1Q
- 2.Qc5#
- 1...h1B
- 2.Qc5#
- 1...Bh5
- 2.Qc5#
- 2.Qe4#
- 1...Bf7
- 2.Qc5#
- 1...Sg1
- 2.Sd4#
- 2.Qc5#
- 2.Qe4#
- 1...Sc3
- 2.Sd4#
- 2.Qc5#
- 1...Sg3
- 2.Sd4#
- 2.Qc5#
- 1...Sf4
- 2.Sd4#
- 2.Qc5#
- 1...Sb6
- 2.Sa7#
- 2.Qc5#
- 2.Qe6#
- 1...Sd6
- 2.Sa7#
- 2.Qc5#
- 1...Se7
- 2.Sa7#
- 2.Qc5#
- 2.Qe6#
- 1...Bxf5+!
- threat
- 1.Qf4?
- threat
- 2.Qxc7#
- 2.Qf3#
- 2.Qe4#
- 1...Sd4+
- 2.Sxd4#
- 1...Sxf4
- 2.Sd4#
- 1...h1Q
- 2.Qxc7#
- 1...h1B
- 2.Qxc7#
- 1...Bh5
- 2.Qxc7#
- 2.Qe4#
- 1...Bf7
- 2.Qxc7#
- 1...Sg1
- 2.Sd4#
- 2.Qxc7#
- 2.Qe4#
- 1...Sc3
- 2.Sd4#
- 2.Qxc7#
- 1...Sg3
- 2.Sd4#
- 2.Qxc7#
- 1...Sb6
- 2.Sa7#
- 2.Qxc7#
- 1...Sd6
- 2.Sa7#
- 1...Se7
- 2.Sa7#
- 2.Qxc7#
- 1...Bxf5+!
- threat
- 1.Qf8?
- threat
- 2.Qc5#
- 1...Sd4+
- 2.Sxd4#
- 1...Sd6
- 2.Sa7#
- 1...Se7
- 2.Sa7#
- 2.Qf6#
- 1...Bxf5+!
- threat
- 1.Qxh2?
- threat
- 2.Qxc7#
- 2.Qh1#
- 2.Qg2#
- 1...Sd4+
- 2.Sxd4#
- 1...Bh5
- 2.Qxc7#
- 1...Bf7
- 2.Qxc7#
- 1...Sg1
- 2.Sd4#
- 2.Qxc7#
- 1...Sc3
- 2.Sd4#
- 2.Qxc7#
- 1...Sg3
- 2.Sd4#
- 1...Sf4
- 2.Sd4#
- 1...Sb6
- 2.Sa7#
- 2.Qxc7#
- 1...Sd6
- 2.Sa7#
- 1...Se7
- 2.Sa7#
- 2.Qxc7#
- 1...Bxf5+!
- threat
- 1.Qxg6+?
- 1...Sd6
- 2.Sa7#
- 2.Se7#
- 1...hxg6!
- 1...Sd6
- 1.Kd1?
- Keys
- 1.Kb2!
- 1...h1Q
- 2.Qxh1#
- 1...h1S
- 2.Qxh1#
- 1...h1B
- 2.Qxh1#
- 1...h1R
- 2.Qxh1#
- 1...Sc1
- 2.Sd4#
- 1...Sg1
- 2.Sd4#
- 1...Sc3
- 2.Sd4#
- 1...Sg3
- 2.Sd4#
- 1...Sd4
- 2.Sxd4#
- 1...Sf4
- 2.Sd4#
- 1...Sb6
- 2.Sa7#
- 2.Se7#
- 1...Sd6
- 2.Se7#
- 1...Sa7
- 2.Se7#
- 1...Se7
- 2.Sxe7#
- 1...h1Q
- 1.Kb2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 9
- ADDED MATES = 0
- REMOVED MATES = 1
- Sets
- S(a);N_GUARD::S(E)
- S(a);CHECK,N_GUARD::S(E),XS(a)
- S(j);N_GUARD::S(E)
- S(j);N_GUARD,N_SPINB(f)::S(E)
- S(j);N_GUARD::S(E),XS(j)
- P(b);OGATE::QAB(G),XQ(b)
- P(b);OGATE::QAB(G),XS(b)
- P(b);OGATE::QAB(G),XB(b)
- P(b);OGATE::QAB(G),XR(b)
- Tries
- Try
- K(A);N_SPINS(F),S_FLIGHT
- Vars
- P(b);CHECK,OGATE::QAB(G),XQ(b)
- P(b);CHECK,OGATE::QAB(G),XR(b)
- P(b);OGATE::QAB(G),XS(b)
- P(b);OGATE::QAB(G),XB(b)
- Refutation
- S(a);CHECK
- Try
- B(B);
- Vars
- S(a);CHECK,N_GUARD::S(E),XS(a)
- P(b);OGATE::QAB(G),XQ(b)
- P(b);OGATE::QAB(G),XS(b)
- P(b);OGATE::QAB(G),XB(b)
- P(b);OGATE::QAB(G),XR(b)
- S(a);N_GUARD::S(E)
- S(j);N_GUARD::S(E)
- S(j);N_GUARD,N_SPINB(f)::S(E)
- S(j);N_GUARD::S(E),XS(j)
- Refutation
- P(d);
- Try
- Q(G);N_PINB(f),XP(c)
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,N_GUARD::S(E),XS(a)
- P(b);::QAR1(G)
- B(f);N_PINS(F)::QAR1(G)
- Refutation
- B(f);CHECK,XS(F)
- Try
- Q(G);N_PINB(f)
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,N_GUARD::S(E),XS(a)
- S(a);N_GUARD,XQ(G)::S(E)
- P(b);::QAR1(G),XP(h)
- B(f);N_PINS(F)::QAR1(G),XP(h)
- S(j);N_GUARD::S(E)
- Refutation
- B(f);CHECK,XS(F)
- Try
- Q(G);N_PINB(f)
- Threat
- QAR1(G)
- Vars
- S(a);CHECK,N_GUARD::S(E),XS(a)
- S(j);N_GUARD::S(E)
- Refutation
- B(f);CHECK,XS(F)
- Try
- Q(G);N_PINB(f),XP(b)
- Threat
- DUALS(3)
- Vars
- S(a);CHECK,N_GUARD::S(E),XS(a)
- B(f);N_PINS(F)::QAR1(G),XP(h)
- S(a);N_GUARD::S(E)
- S(j);N_GUARD::S(E)
- Refutation
- B(f);CHECK,XS(F)
- Try
- Q(G);CHECK,N_SPINS(F),XB(f)
- Refutation
- P(i);XQ(G)
- Try
- Actual
- K(A);N_SPINS(F),P-FLIGHT,P_SPINS(E)
- Vars
- P(b);OGATE::QAB(G),XQ(b)
- P(b);OGATE::QAB(G),XS(b)
- P(b);OGATE::QAB(G),XB(b)
- P(b);OGATE::QAB(G),XR(b)
- S(a);N_GUARD::S(F)
- S(a);N_GUARD::S(F),XS(a)
- S(j);N_GUARD,N_SPINB(f)::S(F)
- S(j);N_GUARD::S(F)
- S(j);N_GUARD::S(F),XS(j)
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