MESON Chess Problem Database
Problem Display
PID: 2951 (8/7b/1Q4p1/3N2K1/2pp4/1p1kPP2/1R2n3/8 w - - 0 1)
Williams, Philip Hamilton
Source?, 1913
#2
6 + 7
| 236 | The Field | 1918 |
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Bg8
- 2.Qxg6#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...c3
- 2.Qb5#
- 2.Qa6#
- 1...dxe3
- 2.Qxe3#
- 1...Bg8
- Tries
- 1.Kg4?
- 1...dxe3
- 2.Qxe3#
- 1...c3
- 2.Qb5#
- 2.Qa6#
- 1...Bg8
- 2.Qxg6#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...g5!
- 1...dxe3
- 1.Kh4?
- 1...dxe3
- 2.Qxe3#
- 1...c3
- 2.Qb5#
- 2.Qa6#
- 1...Bg8
- 2.Qxg6#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...g5+!
- 1...dxe3
- 1.Kh6?
- 1...dxe3
- 2.Qxe3#
- 1...c3
- 2.Qb5#
- 2.Qa6#
- 1...Bg8
- 2.Qxg6#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...g5!
- 1...dxe3
- 1.Qc5?
- 1...dxe3
- 2.Qxe3#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...c3
- 2.Qb5#
- 1...Bg8!
- 1...dxe3
- 1.Qa7?
- 1...dxe3
- 2.Qxe3#
- 1...c3
- 2.Qa6#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...Bg8!
- 1...dxe3
- 1.Qxb3+?
- 1...Sc3
- 2.Qc2#
- 1...c3
- 2.Qb5#
- 1...cxb3!
- 1...Sc3
- 1.Qe6?
- threat
- 2.Qe4#
- 1...c3
- 2.Sb4#
- 2.Qa6#
- 1...Sc3
- 2.Sb4#
- 2.Sf4#
- 1...Sg3!
- threat
- 1.Kg4?
- Keys
- 1.Qf6!
- 1...dxe3
- 2.Sb4#
- 1...c3
- 2.Qa6#
- 1...Bg8
- 2.Qxg6#
- 1...Sc1
- 2.Qxd4#
- 1...Sg1
- 2.Qxd4#
- 1...Sc3
- 2.Qxd4#
- 1...Sg3
- 2.Qxd4#
- 1...Sf4
- 2.Qxd4#
- 1...dxe3
- 1.Qf6!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(g);N_GUARD::QAB(F),XP(f)
- S(a);N_GUARD::QAR1(F),XP(e)
- P(e);OGATE,XP(B)::QAR1(F),XP(e)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- P(e);OGATE,XP(B)::QAR1(F),XP(e)
- B(g);N_GUARD::QAB(F),XP(f)
- S(a);N_GUARD::QAR1(F),XP(e)
- Refutation
- P(f);
- Try
- K(E);S_FLIGHT
- Vars
- P(e);OGATE,XP(B)::QAR1(F),XP(e)
- B(g);N_GUARD::QAB(F),XP(f)
- S(a);N_GUARD::QAR1(F),XP(e)
- Refutation
- P(f);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- P(e);OGATE,XP(B)::QAR1(F),XP(e)
- B(g);N_GUARD::QAB(F),XP(f)
- S(a);N_GUARD::QAR1(F),XP(e)
- Refutation
- P(f);
- Try
- Q(F);
- Vars
- P(e);OGATE,XP(B)::QAR1(F),XP(e)
- S(a);N_GUARD::QAR1(F),XP(e)
- P(d);OGATEB::QAB(F)
- Refutation
- B(g);
- Try
- Q(F);
- Vars
- P(e);OGATE,XP(B)::QAR1(F),XP(e)
- P(d);OGATEB::QAB(F)
- S(a);N_GUARD::QAR1(F),XP(e)
- Refutation
- B(g);
- Try
- Q(F);CHECK,XP(b)
- Vars
- S(a);P_SPINS(a)::QAB1(F)
- P(d);OGATEB,P_SPINP(d)::QAB(F)
- Refutation
- P(d);XQ(F)
- Try
- Q(F);
- Threat
- QAB1(F)
- Refutation
- S(a);
- Try
- Actual
- Q(F);
- Vars
- P(e);SBLOCK,XP(B)::S(D)
- P(d);OGATEB::QAB(F)
- B(g);N_GUARD::QAB(F),XP(f)
- S(a);N_GUARD::QAR1(F),XP(e)
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