MESON Chess Problem Database
Problem Display
PID: 19018 (8/4B3/5p2/1nN3nR/3PPkP1/8/3P2R1/6NK w - - 0 1)
Williams, Philip Hamilton
Sp. Prize, Pittsburgh Gazette-Times, 1911-1912
#2
10 + 4
| 2638 | White to Play | 1913 |
| 2681 | All Change Here! | 1919 |
| 887 | Mate in Two Moves | 1931 |
| 102 | Probleemblad | 1975 |
SOLUTION
- SOUND
- Sets
- 1...Sa3
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sxd4
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sf3
- 2.Se2#
- 2.Sh3#
- 2.Rf5#
- 1...Sh3
- 2.Rf5#
- 1...Sxe4
- 2.Sd3#
- 2.Se6#
- 2.Rf5#
- 1...Se6
- 2.Rf5#
- 1...Sf7
- 2.Rf5#
- 1...Sh7
- 2.Rf5#
- 1...f5
- 2.Bxg5#
- 1...Sa3
- Tries
- 1.Kh2?
- 1...Sxd4
- 2.Bd6#
- 1...Sxe4
- 2.Sd3#
- 2.Se6#
- 2.Rf5#
- 1...Sa3
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sh3
- 2.Rf5#
- 1...Se6
- 2.Rf5#
- 1...Sf7
- 2.Rf5#
- 1...Sh7
- 2.Rf5#
- 1...f5
- 2.Bxg5#
- 1...Sf3+!
- 1...Sxd4
- 1.Sh3+?
- 1...Sxh3
- 2.Rf5#
- 1...Kf3!
- 1...Sxh3
- 1.Bxf6?
- threat
- 2.Be5#
- 2.Bxg5#
- 1...Sxe4
- 2.Sd3#
- 2.Se6#
- 2.Be5#
- 2.Rf5#
- 1...Sf3
- 2.Se2#
- 2.Sh3#
- 2.Rf5#
- 1...Sh3
- 2.Be5#
- 2.Rf5#
- 1...Se6
- 2.Be5#
- 2.Rf5#
- 1...Sf7
- 2.Rf5#
- 1...Sh7
- 2.Be5#
- 2.Rf5#
- 1...Sxd4!
- threat
- 1.Bd8?
- 1...Sxd4
- 2.Bc7#
- 1...Sxe4
- 2.Sd3#
- 2.Se6#
- 2.Rf5#
- 1...Sa3
- 2.Bc7#
- 1...Sc3
- 2.Bc7#
- 1...Sa7
- 2.Bc7#
- 1...Sc7
- 2.Bxc7#
- 1...Sf3
- 2.Se2#
- 2.Sh3#
- 2.Rf5#
- 1...Sh3
- 2.Rf5#
- 1...Se6
- 2.Rf5#
- 1...Sf7
- 2.Rf5#
- 1...Sh7
- 2.Rf5#
- 1...f5
- 2.Bxg5#
- 1...Sd6!
- 1...Sxd4
- 1.Bf8?
- 1...Sxd4
- 2.Bd6#
- 1...Sxe4
- 2.Sd3#
- 2.Se6#
- 2.Rf5#
- 1...Sa3
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sf3
- 2.Se2#
- 2.Sh3#
- 2.Rf5#
- 1...Sh3
- 2.Rf5#
- 1...Se6
- 2.Rf5#
- 1...Sf7
- 2.Rf5#
- 1...Sh7
- 2.Rf5#
- 1...f5!
- 1...Sxd4
- 1.Rg3?
- threat
- 2.Se2#
- 1...Sxd4
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Kxg3!
- threat
- 1.Kh2?
- Keys
- 1.Rh4!
- 1...Sxd4
- 2.Bd6#
- 1...Sxe4
- 2.Se6#
- 1...Sf3
- 2.Sh3#
- 1...Sh3
- 2.g5#
- 1...Se6
- 2.g5#
- 1...Sf7
- 2.g5#
- 1...Sh7
- 2.g5#
- 1...Sa3
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...f5
- 2.gxf5#
- 1...Sxd4
- 1.Rh4!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 5
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- S(b);N_GUARD::B(J)
- S(b);N_GUARD,XP(E)::B(J)
- S(b);N_GUARD::B(J),XS(b)
- S(c);OGATE::R1(I)
- P(d);OGATE::B(J),XS(c)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- S(b);N_GUARD,XP(E)::B(J)
- S(b);N_GUARD::B(J)
- S(b);N_GUARD::B(J),XS(b)
- S(c);OGATE::R1(I)
- P(d);OGATE::B(J),XS(c)
- Refutation
- S(c);CHECK
- Try
- S(A);CHECK
- Vars
- S(c);OGATE,XS(A)::R1(I)
- Refutation
- K(a);P-FLIGHT
- Try
- B(J);XP(d)
- Threat
- DUALS(2)
- Vars
- S(c);OGATE::R1(I)
- Refutation
- S(b);XP(E)
- Try
- B(J);
- Vars
- S(b);N_GUARD,XP(E)::B(J)
- S(b);N_GUARD::B(J)
- S(b);N_GUARD::B(J),XS(b)
- S(c);OGATE::R1(I)
- P(d);OGATE::B(J),XS(c)
- Refutation
- S(b);
- Try
- B(J);
- Vars
- S(b);N_GUARD,XP(E)::B(J)
- S(b);N_GUARD::B(J)
- S(b);N_GUARD::B(J),XS(b)
- S(c);OGATE::R1(I)
- Refutation
- P(d);
- Try
- R(D);
- Threat
- S(A)
- Vars
- S(b);N_GUARD,XP(E)::B(J)
- S(b);N_GUARD::B(J)
- Refutation
- K(a);S_FLIGHT,XR(D)
- Try
- Actual
- R(I);
- Vars
- S(b);N_GUARD,XP(E)::B(J)
- S(c);N_GUARD,SBLOCK,XP(F)::S(H)
- S(c);N_GUARD,SBLOCK::S(A)
- S(c);OGATE::R(I)+P(G)
- S(b);N_GUARD::B(J)
- S(b);N_GUARD::B(J),XS(b)
- P(d);OGATE::R(I)+P(G),XP(d)
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