MESON Chess Problem Database
Problem Display
PID: 21448 (8/4n2p/4N2p/4p2Q/4kN2/6p1/B2n2K1/6B1 w - - 0 1)
Booth, David (Jr)
Chess Amateur (The), 1919
#2
6 + 7
| 2681 | All Change Here! | 1919 |
| 3360 | Simple Two-move Themes | 1924 |
| 5501 | Chess Cameos | 1936 |
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Bxb1#
- 1...Sf1
- 2.Bb1#
- 1...Sb3
- 2.Bb1#
- 1...Sf3
- 2.Bb1#
- 1...Sc4
- 2.Bb1#
- 1...Sd5
- 2.Bxd5#
- 1...Sf5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...exf4
- 2.Sc5#
- 1...Sb1
- Tries
- 1.Kh1?
- 1...exf4
- 2.Sc5#
- 1...Sb1
- 2.Bxb1#
- 1...Sf1
- 2.Bb1#
- 1...Sb3
- 2.Bb1#
- 1...Sf3
- 2.Bb1#
- 1...Sc4
- 2.Bb1#
- 1...Sd5
- 2.Bxd5#
- 1...Sf5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...g2+!
- 1...exf4
- 1.Kh3?
- 1...exf4
- 2.Sc5#
- 1...Sb1
- 2.Bxb1#
- 1...Sf1
- 2.Bb1#
- 1...Sb3
- 2.Bb1#
- 1...Sf3
- 2.Bb1#
- 1...Sc4
- 2.Bb1#
- 1...Sd5
- 2.Bxd5#
- 1...Sf5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...g2!
- 1...exf4
- 1.Se2?
- threat
- 2.Sc5#
- 1...Sb3
- 2.Qf3#
- 1...Sc4
- 2.Qf3#
- 1...Kd3!
- threat
- 1.Sd3?
- threat
- 2.Sdc5#
- 2.Sec5#
- 1...Sb3
- 2.Qf3#
- 1...Sc4
- 2.Qf3#
- 1...Kxd3!
- threat
- 1.Sh3?
- threat
- 2.Sc5#
- 1...Sb3
- 2.Qf3#
- 1...Sc4
- 2.Qf3#
- 1...Kd3!
- threat
- 1.Sd4?
- 1...Kxf4
- 2.Qh4#
- 1...exf4
- 2.Qe2#
- 1...Sb1
- 2.Qf3#
- 1...Sf1
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sc4
- 2.Qf3#
- 1...Sd5
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sc6
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sc8
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...exd4!
- 1...Kxf4
- 1.Bf2?
- 1...exf4
- 2.Sc5#
- 1...Sb1
- 2.Bxb1#
- 1...Sf1
- 2.Bb1#
- 1...Sb3
- 2.Bb1#
- 1...Sf3
- 2.Bb1#
- 1...Sc4
- 2.Bb1#
- 1...Sd5
- 2.Bxd5#
- 1...Sf5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...gxf2!
- 1...exf4
- 1.Bc5?
- 1...Sb1
- 2.Bxb1#
- 1...Sf1
- 2.Bb1#
- 1...Sb3
- 2.Bb1#
- 1...Sf3
- 2.Bb1#
- 1...Sc4
- 2.Bb1#
- 1...Sd5
- 2.Bxd5#
- 1...Sf5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...exf4!
- 1...Sb1
- 1.Bb6?
- 1...Sb1
- 2.Bxb1#
- 1...Sf1
- 2.Bb1#
- 1...Sb3
- 2.Bb1#
- 1...Sf3
- 2.Bb1#
- 1...Sc4
- 2.Bb1#
- 1...Sd5
- 2.Bxd5#
- 1...Sf5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...exf4!
- 1...Sb1
- 1.Ba7?
- 1...Sb1
- 2.Bxb1#
- 1...Sf1
- 2.Bb1#
- 1...Sb3
- 2.Bb1#
- 1...Sf3
- 2.Bb1#
- 1...Sc4
- 2.Bb1#
- 1...Sd5
- 2.Bxd5#
- 1...Sf5
- 2.Bd5#
- 1...Sc6
- 2.Bd5#
- 1...Sg6
- 2.Bd5#
- 1...Sc8
- 2.Bd5#
- 1...Sg8
- 2.Bd5#
- 1...exf4!
- 1...Sb1
- 1.Bc4?
- threat
- 2.Bd3#
- 1...exf4
- 2.Sc5#
- 1...Sxc4!
- threat
- 1.Qf3+?
- 1...Sxf3
- 2.Bb1#
- 1...Kf5!
- 1...Sxf3
- 1.Qg4?
- threat
- 2.Sc5#
- 1...Sb3
- 2.Bb1#
- 1...exf4!
- threat
- 1.Qf7?
- threat
- 2.Sc5#
- 1...Sb3
- 2.Bb1#
- 1...Sf5
- 2.Bd5#
- 2.Qb7#
- 1...exf4!
- threat
- 1.Qf5+?
- 1...Sxf5
- 2.Bd5#
- 1...Kxf5!
- 1...Sxf5
- 1.Qg5?
- threat
- 2.Sc5#
- 1...Sb3
- 2.Bb1#
- 1...hxg5!
- threat
- 1.Kh1?
- Keys
- 1.Sg7!
- 1...Kxf4
- 2.Qh4#
- 1...exf4
- 2.Qe2#
- 1...Sb1
- 2.Qf3#
- 1...Sf1
- 2.Qf3#
- 1...Sb3
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 1...Sc4
- 2.Qf3#
- 1...Sd5
- 2.Qf5#
- 1...Sf5
- 2.Qxf5#
- 1...Sc6
- 2.Qf5#
- 1...Sg6
- 2.Qf5#
- 1...Sc8
- 2.Qf5#
- 1...Sg8
- 2.Qf5#
- 1...Kxf4
- 1.Sg7!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 12
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::B(B),XS(a)
- S(a);N_GUARD::B(B)
- S(f);N_GUARD::B(B),XS(f)
- S(f);N_GUARD::B(B)
- P(d);SBLOCK,XS(D)::S(F)
- Tries
- Try
- K(C);S_FLIGHT
- Vars
- P(d);SBLOCK,XS(D)::S(F)
- S(a);N_GUARD::B(B),XS(a)
- S(a);N_GUARD::B(B)
- S(f);N_GUARD::B(B),XS(f)
- S(f);N_GUARD::B(B)
- Refutation
- P(b);CHECK
- Try
- K(C);S_FLIGHT
- Vars
- P(d);SBLOCK,XS(D)::S(F)
- S(a);N_GUARD::B(B),XS(a)
- S(a);N_GUARD::B(B)
- S(f);N_GUARD::B(B),XS(f)
- S(f);N_GUARD::B(B)
- Refutation
- P(b);
- Try
- S(D);
- Threat
- S(F)
- Vars
- S(a);N_GUARD::QAB1(E)
- Refutation
- K(c);S_FLIGHT
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD::QAB1(E)
- Refutation
- K(c);S_FLIGHT,XS(D)
- Try
- S(D);
- Threat
- S(F)
- Vars
- S(a);N_GUARD::QAB1(E)
- Refutation
- K(c);S_FLIGHT
- Try
- S(F);
- Vars
- K(c);OGATEB,P-FLIGHT,XS(D)::QAR2(E)
- P(d);SBLOCK,XS(D)::QAR2(E)
- S(a);N_GUARD::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(f);N_GUARD::QAB1(E)
- S(f);N_GUARD::QAB1(E),XS(f)
- Refutation
- P(d);XS(F)
- Try
- B(A);
- Vars
- P(d);SBLOCK,XS(D)::S(F)
- S(a);N_GUARD::B(B),XS(a)
- S(a);N_GUARD::B(B)
- S(f);N_GUARD::B(B),XS(f)
- S(f);N_GUARD::B(B)
- Refutation
- P(b);XB(A)
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(B),XS(a)
- S(a);N_GUARD::B(B)
- S(f);N_GUARD::B(B),XS(f)
- S(f);N_GUARD::B(B)
- Refutation
- P(d);XS(D)
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(B),XS(a)
- S(a);N_GUARD::B(B)
- S(f);N_GUARD::B(B),XS(f)
- S(f);N_GUARD::B(B)
- Refutation
- P(d);XS(D)
- Try
- B(A);
- Vars
- S(a);N_GUARD::B(B),XS(a)
- S(a);N_GUARD::B(B)
- S(f);N_GUARD::B(B),XS(f)
- S(f);N_GUARD::B(B)
- Refutation
- P(d);XS(D)
- Try
- B(B);
- Threat
- B(B)
- Vars
- P(d);SBLOCK,XS(D)::S(F)
- Refutation
- S(a);XB(B)
- Try
- Q(E);CHECK
- Vars
- S(a);XQ(E)::B(B)
- Refutation
- K(c);S_FLIGHT
- Try
- Q(E);
- Threat
- S(F)
- Vars
- S(a);N_GUARD::B(B)
- Refutation
- P(d);P_SPINP(d),XS(D)
- Try
- Q(E);
- Threat
- S(F)
- Vars
- S(a);N_GUARD::B(B)
- Refutation
- P(d);XS(D)
- Try
- Q(E);CHECK
- Vars
- S(f);SBLOCK,XQ(E)::B(B)
- Refutation
- K(c);S_FLIGHT,XQ(E)
- Try
- Q(E);
- Threat
- S(F)
- Vars
- S(a);N_GUARD::B(B)
- Refutation
- P(e);XQ(E)
- Try
- Actual
- S(F);
- Vars
- K(c);OGATEB,P-FLIGHT,XS(D)::QAR2(E)
- P(d);SBLOCK,XS(D)::QAR2(E)
- S(a);N_GUARD::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(f);N_GUARD::QAB1(E)
- S(f);N_GUARD::QAB1(E),XS(f)
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