MESON Chess Problem Database
Problem Display
PID: 2979 (5r2/5p2/1n1N4/1KPPk1PR/3R1pPB/2P5/8/8 w - - 0 1)
Pedler, Philip O
Source?, 1915
#2
10 + 5
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sxd5
- 2.Re4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...f3
- 2.Bg3#
- 1...f5
- 2.gxf5 ep#
- 1...f6
- 2.gxf6#
- 1...Ra8
- Tries
- 1.Kb4?
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...f3
- 2.Bg3#
- 1...f5
- 2.gxf5 ep#
- 1...f6
- 2.gxf6#
- 1...Sxd5+!
- 1...Ra8
- 1.Ka5?
- 1...Sc4+
- 2.Sxc4#
- 1...Sxd5
- 2.Re4#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sa4
- 2.Sc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...f3
- 2.Bg3#
- 1...f5
- 2.gxf5 ep#
- 1...f6
- 2.gxf6#
- 1...Ra8+!
- 1...Sc4+
- 1.Ka6?
- 1...Sxd5
- 2.Re4#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...f3
- 2.Bg3#
- 1...f5
- 2.gxf5 ep#
- 1...f6
- 2.gxf6#
- 1...Ra8+!
- 1...Sxd5
- 1.Kc6?
- threat
- 2.Re4#
- 1...f5
- 2.gxf5 ep#
- 1...Rc8+!
- threat
- 1.Bg3?
- threat
- 2.Bxf4#
- 1...Sxd5
- 2.Re4#
- 1...fxg3!
- threat
- 1.Rh6?
- 1...Sxd5
- 2.Sc4#
- 2.Re4#
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...f3
- 2.Bg3#
- 1...f5
- 2.Re6#
- 1...f6!
- 1...Sxd5
- 1.cxb6?
- threat
- 2.Sc4#
- 1...Rc8
- 2.Sxf7#
- 1...Kxd6!
- threat
- 1.Kb4?
- Keys
- 1.Rh7!
- 1...Sxd5
- 2.Re4#
- 1...Ra8
- 2.Sxf7#
- 1...Rb8
- 2.Sxf7#
- 1...Rc8
- 2.Sxf7#
- 1...Rd8
- 2.Sxf7#
- 1...Re8
- 2.Sxf7#
- 1...Rg8
- 2.Sxf7#
- 1...Rh8
- 2.Sxf7#
- 1...Sa4
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Sd7
- 2.Sc4#
- 1...Sa8
- 2.Sc4#
- 1...Sc8
- 2.Sc4#
- 1...f3
- 2.Bg3#
- 1...f5
- 2.Re7#
- 1...f6
- 2.Re7#
- 1...Sxd5
- 1.Rh7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(e);N_GUARD::S(J),XP(d)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- S(c);SBLOCK,XP(G)::R1(B)
- P(a);OGATEB::B(D)
- P(d);OGATE::R(I)+P(H),XP(d),EP
- P(d);OGATE::R(I)+P(H),XP(d)
- Tries
- Try
- K(E);P-FLIGHT
- Vars
- R(e);N_GUARD::S(J),XP(d)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- P(a);OGATEB::B(D)
- P(d);OGATE::R(I)+P(H),XP(d),EP
- P(d);OGATE::R(I)+P(H),XP(d)
- Refutation
- S(c);CHECK,XP(G)
- Try
- K(E);P-FLIGHT
- Vars
- S(c);CHECK,N_GUARD::S(J),XS(c)
- S(c);SBLOCK,XP(G)::R1(B)
- R(e);N_GUARD::S(J),XP(d)
- S(c);N_GUARD::S(J)
- P(a);OGATEB::B(D)
- P(d);OGATE::R(I)+P(H),XP(d),EP
- P(d);OGATE::R(I)+P(H),XP(d)
- Refutation
- R(e);CHECK
- Try
- K(E);S_FLIGHT
- Vars
- S(c);SBLOCK,XP(G)::R1(B)
- R(e);N_GUARD::S(J),XP(d)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- P(a);OGATEB::B(D)
- P(d);OGATE::R(I)+P(H),XP(d),EP
- P(d);OGATE::R(I)+P(H),XP(d)
- Refutation
- R(e);CHECK
- Try
- K(E);S_FLIGHT
- Threat
- R1(B)
- Vars
- P(d);OGATE::R(I)+P(H),XP(d),EP
- Refutation
- R(e);CHECK
- Try
- B(D);P_PINP(a)
- Threat
- B(D),XP(a)
- Vars
- S(c);SBLOCK,XP(G)::R1(B)
- Refutation
- P(a);N_SPINP(a),XB(D)
- Try
- R(I);
- Vars
- R(e);N_GUARD::S(J),XP(d)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- P(a);OGATEB::B(D)
- P(d);N_GUARD::R1(I)
- Refutation
- P(d);
- Try
- P(F);XS(c)
- Threat
- S(J)
- Vars
- R(e);N_GUARD::S(J),XP(d)
- Refutation
- K(b);S_FLIGHT,XS(J)
- Try
- Actual
- R(I);
- Vars
- S(c);SBLOCK,XP(G)::R1(B)
- R(e);N_GUARD::S(J),XP(d)
- S(c);N_GUARD::S(J)
- S(c);N_GUARD::S(J),XS(c)
- P(a);OGATEB::B(D)
- P(d);OGATE::R(I)
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