MESON Chess Problem Database
Problem Display
PID: 3138 (8/4Q1p1/6PN/1n4P1/RB2pkbR/4pP2/5n1K/6N1 w - - 0 1)
Gevers, Raymond
Source?, 1919
#2
10 + 7
| 2681 | All Change Here! | 1919 |
SOLUTION
- SOUND
- Sets
- 1...Sd1
- 2.Rxg4#
- 1...Sh1
- 2.Rxg4#
- 1...Sd3
- 2.Rxg4#
- 1...Sh3
- 2.Rxg4#
- 1...Sa3
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sd4
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...e2
- 2.Bd2#
- 1...exf3
- 2.Bd6#
- 1...gxh6
- 2.Qf6#
- 1...Sd1
- Tries
- 1.Kg2?
- threat
- 2.Se2#
- 1...gxh6
- 2.Qf6#
- 1...e2
- 2.Bd2#
- 1...Sc3
- 2.Bd6#
- 1...Sd4
- 2.Bd6#
- 1...exf3+!
- threat
- 1.Ba3?
- 1...gxh6
- 2.Qf6#
- 1...e2
- 2.Bc1#
- 1...Sd1
- 2.Rxe4#
- 2.Rxg4#
- 1...Sh1
- 2.Rxe4#
- 2.Rxg4#
- 1...Sd3
- 2.Rxe4#
- 2.Rxg4#
- 1...Sh3
- 2.Rxe4#
- 2.Rxg4#
- 1...Sc3
- 2.Bd6#
- 1...Sd4
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...Sxa3!
- 1...gxh6
- 1.Ba5?
- 1...gxh6
- 2.Qf6#
- 1...e2
- 2.Bd2#
- 1...Sa3
- 2.Bc7#
- 1...Sd1
- 2.Rxe4#
- 2.Rxg4#
- 1...Sh1
- 2.Rxe4#
- 2.Rxg4#
- 1...Sd3
- 2.Rxe4#
- 2.Rxg4#
- 1...Sh3
- 2.Rxe4#
- 2.Rxg4#
- 1...Sc3
- 2.Bc7#
- 1...Sd4
- 2.Bc7#
- 1...Sa7
- 2.Bc7#
- 1...Sc7
- 2.Bxc7#
- 1...Sd6!
- 1...gxh6
- 1.Bc5?
- 1...gxh6
- 2.Qf6#
- 1...Sa3
- 2.Bd6#
- 1...Sd1
- 2.Rxe4#
- 2.Rxg4#
- 1...Sh1
- 2.Rxe4#
- 2.Rxg4#
- 1...Sd3
- 2.Rxe4#
- 2.Rxg4#
- 1...Sh3
- 2.Rxe4#
- 2.Rxg4#
- 1...Sc3
- 2.Bd6#
- 1...Sd4
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...e2!
- 1...gxh6
- 1.Ra8?
- threat
- 2.Rf8#
- 1...Sd4
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...e2!
- threat
- 1.Qxe4+?
- 1...Kxg5
- 2.Be7#
- 1...Sxe4!
- 1...Kxg5
- 1.Qf7+?
- 1...Kxg5
- 2.Be7#
- 1...Ke5!
- 1...Kxg5
- 1.fxe4?
- 1...Sxe4
- 2.Rxg4#
- 1...e2
- 2.Bd2#
- 1...Sd4
- 2.Bd6#
- 1...Sd1
- 2.Rxg4#
- 1...Sh1
- 2.Rxg4#
- 1...Sd3
- 2.Rxg4#
- 1...Sh3
- 2.Rxg4#
- 1...Sa3
- 2.Bd6#
- 1...Sc3
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...gxh6!
- 1...Sxe4
- 1.Kg2?
- Keys
- 1.Ra3!
- 1...Sxa3
- 2.Bd6#
- 1...exf3
- 2.Qxe3#
- 1...gxh6
- 2.Qf6#
- 1...Sd1
- 2.Rxg4#
- 1...Sh1
- 2.Rxg4#
- 1...Sd3
- 2.Rxg4#
- 1...Sh3
- 2.Rxg4#
- 1...Sc3
- 2.Bd6#
- 1...Sd4
- 2.Bd6#
- 1...Sd6
- 2.Bxd6#
- 1...Sa7
- 2.Bd6#
- 1...Sc7
- 2.Bd6#
- 1...e2
- 2.Sxe2#
- 1...Sxa3
- 1.Ra3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R1(F),XB(e)
- S(f);N_GUARD::B(E)
- S(f);N_GUARD::B(E),XS(f)
- P(b);OGATEB::B(E)
- P(c);XP(C)::R(D)+B(E),DCHECK
- P(g);N_GUARD,XS(I)::QAR2(J)
- Tries
- Try
- K(B);P-FLIGHT
- Threat
- S(A)
- Vars
- P(g);N_GUARD,XS(I)::QAR2(J)
- P(b);OGATEB::B(E)
- S(f);N_GUARD::B(E)
- Refutation
- P(c);CHECK,XP(C)
- Try
- B(E);P_PINP(c)
- Vars
- P(g);N_GUARD,XS(I)::QAR2(J)
- P(b);OGATEB::B(E)
- S(f);N_GUARD::B(E)
- S(f);N_GUARD,N_SPINP(c)::B(E)
- S(f);N_GUARD::B(E),XS(f)
- Refutation
- S(f);XB(E)
- Try
- B(E);P_PINP(c)
- Vars
- P(g);N_GUARD,XS(I)::QAR2(J)
- P(b);OGATEB::B(E)
- S(f);N_GUARD::B(E)
- S(f);N_GUARD,N_SPINP(c)::B(E)
- S(f);N_GUARD::B(E),XS(f)
- Refutation
- S(f);
- Try
- B(E);P_PINP(c)
- Vars
- P(g);N_GUARD,XS(I)::QAR2(J)
- S(f);N_GUARD::B(E)
- S(f);N_GUARD,N_SPINP(c)::B(E)
- S(f);N_GUARD::B(E),XS(f)
- Refutation
- P(b);
- Try
- R(D);
- Threat
- R(D)
- Vars
- S(f);N_GUARD::B(E)
- S(f);N_GUARD::B(E),XS(f)
- Refutation
- P(b);
- Try
- Q(J);CHECK,XP(c)
- Vars
- K(d);N_SPINB(e),S_FLIGHT,XP(G)::B(E)
- Refutation
- S(a);XQ(J)
- Try
- Q(J);CHECK
- Vars
- K(d);N_SPINB(e),S_FLIGHT,XP(G)::B(E)
- Refutation
- K(d);N_SPINB(e),S_FLIGHT
- Try
- P(C);XP(c)
- Vars
- S(a);N_GUARD,XP(C)::R1(F),XB(e)
- P(b);OGATEB::B(E)
- S(f);N_GUARD::B(E)
- S(a);N_GUARD::R1(F),XB(e)
- S(f);N_GUARD::B(E),XS(f)
- Refutation
- P(g);XS(I)
- Try
- Actual
- R(D);
- Vars
- S(f);N_GUARD,XR(D)::B(E)
- P(c);OGATE,XP(C)::QAB1(J),XP(b)
- P(g);N_GUARD,XS(I)::QAR2(J)
- S(a);N_GUARD::R1(F),XB(e)
- S(f);N_GUARD::B(E)
- S(f);N_GUARD::B(E),XS(f)
- P(b);::S(A),XP(b)
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