MESON Chess Problem Database
Problem Display
PID: 232088 (5Qn1/K6N/3R4/4p1p1/Rb1Bk1r1/1B4p1/4P1P1/1b4n1 w - - 0 1)
Laws, Benjamin Glover
Pen & Pencil, 1889
(First published on Sat Sep 7 1889)
#2
9 + 9
| 15239 | Valois Notebooks | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rf4
- 2.Sxg5#
- 1...Rh4
- 2.Sxg5#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Be1
- 2.Bd5#
- 1...Bd2
- 2.Bd5#
- 1...Ba3
- 2.Bd5#
- 1...Bc3
- 2.Bd5#
- 1...Ba5
- 2.Bd5#
- 1...Bc5+
- 2.Bxc5#
- 1...Bxd6
- 2.Bc5#
- 1...Sxe2
- 2.Qf3#
- 1...Sf3
- 2.Qxf3#
- 2.gxf3#
- 1...Sh3
- 2.Qf3#
- 1...exd4
- 2.Re6#
- 1...Rf4
- Tries
- 1.Bxg1?
- threat
- 2.Bd5#
- 2.Rxb4#
- 2.Qf3#
- 1...Bd3
- 2.Bd5#
- 2.Qf3#
- 2.exd3#
- 1...Rf4
- 2.Sxg5#
- 2.Bd5#
- 2.Rxb4#
- 1...Ba2
- 2.Bc2#
- 2.Rxb4#
- 2.Qf3#
- 1...Se7
- 2.Rxb4#
- 2.Qf3#
- 1...Sf6!
- threat
- 1.Bc5?
- threat
- 2.Bd5#
- 2.Rxb4#
- 1...Sxe2
- 2.Qf3#
- 1...Bd3
- 2.Bd5#
- 2.exd3#
- 1...Ba2
- 2.Bc2#
- 2.Rxb4#
- 1...Sf3
- 2.Bd5#
- 2.Qxf3#
- 2.exf3#
- 2.gxf3#
- 1...Se7
- 2.Rxb4#
- 1...Sf6!
- threat
- 1.Bb6?
- threat
- 2.Bd5#
- 2.Rxb4#
- 1...Sxe2
- 2.Qf3#
- 1...Bd3
- 2.Bd5#
- 2.exd3#
- 1...Ba2
- 2.Bc2#
- 2.Rxb4#
- 1...Sf3
- 2.Bd5#
- 2.Qxf3#
- 2.exf3#
- 2.gxf3#
- 1...Se7
- 2.Rxb4#
- 1...Sf6!
- threat
- 1.Rxb4?
- threat
- 2.Bd5#
- 2.Bxg1#
- 2.Bf2#
- 2.Bc5#
- 2.Bb6#
- 1...Sxe2
- 2.Qf3#
- 1...exd4
- 2.Re6#
- 1...Bd3
- 2.Bd5#
- 1...Ba2
- 2.Bc2#
- 2.Bxg1#
- 2.Bf2#
- 2.Bc5#
- 2.Bb6#
- 1...Sf3
- 2.Bd5#
- 2.Qxf3#
- 2.gxf3#
- 1...Sh3
- 2.Bd5#
- 2.Bg1#
- 2.Bf2#
- 2.Bc5#
- 2.Bb6#
- 2.Qf3#
- 1...Se7
- 2.Bxg1#
- 2.Bf2#
- 2.Bc5#
- 2.Bb6#
- 1...Sf6!
- threat
- 1.Qf6?
- threat
- 2.Qxe5#
- 1...Bc5+
- 2.Bxc5#
- 1...Bxd6
- 2.Bc5#
- 1...Sxe2
- 2.Qf3#
- 1...exd4
- 2.Re6#
- 1...Sf3
- 2.Qxf3#
- 2.gxf3#
- 1...Sxf6!
- threat
- 1.Bxg1?
- Keys
- 1.Qf1!
- 1...Bc5+
- 2.Bxc5#
- 1...Bxd6
- 2.Bc5#
- 1...Sxe2
- 2.Qf3#
- 1...exd4
- 2.Re6#
- 1...Rf4
- 2.Qxb1#
- 1...Sf3
- 2.Qxf3#
- 1...Bd3
- 2.exd3#
- 1...Rh4
- 2.Sxg5#
- 1...Ba2
- 2.Bc2#
- 1...Bc2
- 2.Bxc2#
- 1...Be1
- 2.Bd5#
- 1...Bd2
- 2.Bd5#
- 1...Ba3
- 2.Bd5#
- 1...Bc3
- 2.Bd5#
- 1...Ba5
- 2.Bd5#
- 1...Sh3
- 2.Qf3#
- 1...Sf6
- 2.Sxf6#
- 1...Sh6
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...Bc5+
- 1.Qf1!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(f);N_GUARD::S(H),XP(h)
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(d);::B(C)
- B(d);CHECK,OGATEB::R(D)+B(E),XB(d)
- B(d);OGATEB,XR(F)::R(D)+B(E)
- S(b);N_GUARD,XP(A)::QAB1(I)
- S(b);N_GUARD::QAB1(I)
- P(g);OGATEB,SBLOCK,XB(E)::R(F)
- Tries
- Try
- B(E);P_PINB(d),XS(b)
- Threat
- DUALS(3)
- Refutation
- S(i);
- Try
- B(E);P_PINB(d)
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XP(A)::QAB1(I)
- S(i);::R(D),XB(d)
- Refutation
- S(i);
- Try
- B(E);P_PINB(d)
- Threat
- DUALS(2)
- Vars
- S(b);N_GUARD,XP(A)::QAB1(I)
- S(i);::R(D),XB(d)
- Refutation
- S(i);
- Try
- R(D);XB(d)
- Threat
- DUALS(5)
- Vars
- S(b);N_GUARD,XP(A)::QAB1(I)
- P(g);OGATEB,P_SPINP(g),XB(E)::R(F)
- B(a);::B(C)
- Refutation
- S(i);
- Try
- Q(I);
- Threat
- QAR1(I),XP(g)
- Vars
- B(d);CHECK,OGATEB::R(D)+B(E),XB(d)
- B(d);OGATEB,XR(F)::R(D)+B(E)
- S(b);N_GUARD,XP(A)::QAB1(I)
- P(g);OGATEB,XB(E)::R(F)
- Refutation
- S(i);XQ(I)
- Try
- Actual
- Q(I);
- Vars
- B(d);CHECK,OGATEB::R(D)+B(E),XB(d)
- B(d);OGATEB,XR(F)::R(D)+B(E)
- S(b);N_GUARD,XP(A)::QAB1(I)
- P(g);OGATEB,SBLOCK,XB(E)::R(F)
- R(f);SBLOCK::QAB(I),XB(a)
- S(b);N_GUARD::QAB1(I),XS(b)
- B(a);OGATE::P(A),XB(a)
- R(f);N_GUARD::S(H),XP(h)
- B(a);N_GUARD::B(C)
- B(a);N_GUARD::B(C),XB(a)
- B(d);::B(C)
- S(b);N_GUARD::QAB1(I)
- S(i);N_GUARD::S(H),XS(i)
- S(i);N_GUARD::S(H)
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