MESON Chess Problem Database
Problem Display
PID: 151977 (2B5/4p1Qp/6np/8/2KBk2n/2P3PN/4P1rp/3rRN1b w - - 0 1)
Proctor, C
Good Companions (January), 1915
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sd2#
- 1...Rb1
- 2.Sd2#
- 1...Rc1
- 2.Sd2#
- 1...Rxe1
- 2.Sd2#
- 1...Rd2
- 2.Sxd2#
- 1...Rxd4+
- 2.Qxd4#
- 1...Rg1
- 2.Sf2#
- 1...Rf2
- 2.Sxf2#
- 1...Rxg3
- 2.Sxg3#
- 1...Sf5
- 2.Bb7#
- 1...Sf4
- 2.Qe5#
- 1...Se5+
- 2.Qxe5#
- 1...Sf8
- 2.Qe5#
- 2.Qg4#
- 1...Sh8
- 2.Qe5#
- 2.Qg4#
- 2.Qxe7#
- 1...h5
- 2.Sg5#
- 1...e5
- 2.Qb7#
- 1...Ra1
- Tries
- 1.Se3?
- threat
- 2.Bb7#
- 1...Rxd4+
- 2.Qxd4#
- 1...Se5+
- 2.Qxe5#
- 1...Sf4
- 2.Qe5#
- 1...Rb1!
- threat
- 1.Qf6?
- threat
- 2.Bb7#
- 2.Qc6#
- 1...Rxd4+
- 2.Qxd4#
- 1...Se5+
- 2.Qxe5#
- 1...Rb1
- 2.Sd2#
- 2.Qc6#
- 1...Sf4
- 2.Qe5#
- 2.Qxf4#
- 1...e6
- 2.Bb7#
- 1...exf6!
- threat
- 1.Qxe7+?
- 1...Se5+
- 2.Qxe5#
- 1...Sxe7!
- 1...Se5+
- 1.g4?
- threat
- 2.Bb7#
- 1...Rxd4+
- 2.Qxd4#
- 1...Se5+
- 2.Qxe5#
- 1...Rb1
- 2.Sd2#
- 1...Sf4
- 2.Qe5#
- 1...Rxg4!
- threat
- 1.Se3?
- Keys
- 1.Bg4!
- 1...Rxd4+
- 2.Qxd4#
- 1...Se5+
- 2.Qxe5#
- 1...Rxe1
- 2.Sd2#
- 1...Rxe2
- 2.Sf2#
- 2.Rxe2#
- 1...Rxg3
- 2.Sxg3#
- 1...Ra1
- 2.Sd2#
- 1...Rb1
- 2.Sd2#
- 1...Rc1
- 2.Sd2#
- 1...Rd2
- 2.Sxd2#
- 1...Rd3
- 2.exd3#
- 1...Rg1
- 2.Sf2#
- 1...Rf2
- 2.Sxf2#
- 1...Sf3
- 2.exf3#
- 1...Sf5
- 2.Bf3#
- 1...Sf4
- 2.Qe5#
- 1...Sf8
- 2.Qe5#
- 1...Sh8
- 2.Qe5#
- 2.Qxe7#
- 1...h5
- 2.Sg5#
- 1...e5
- 2.Qb7#
- 1...e6
- 2.Qb7#
- 1...Rxd4+
- 1.Bg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::S(B)
- R(a);N_GUARD,P_PINP(D)::S(B)
- R(a);N_GUARD,XR(A)::S(B)
- R(a);N_GUARD::S(B),XR(a)
- R(a);CHECK,OGATE,XB(H)::QAR1(I),XR(a)
- R(c);N_GUARD::S(F)
- R(c);N_GUARD::S(F),XR(c)
- R(c);XP(E)::S(B),XR(c)
- S(f);SBLOCK::B(J)
- S(g);N_GUARD::QAR1(I)
- S(g);CHECK,N_GUARD::QAR1(I),XS(g)
- P(h);N_GUARD::S(F)
- P(i);OGATE::QAB(I)
- Tries
- Try
- S(B);
- Threat
- B(J)
- Vars
- R(a);CHECK,OGATE,XB(H)::QAR1(I),XR(a)
- S(g);CHECK,N_GUARD::QAR1(I),XS(g)
- S(g);N_GUARD::QAR1(I)
- Refutation
- R(a);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE,XB(H)::QAR1(I),XR(a)
- S(g);CHECK,N_GUARD::QAR1(I),XS(g)
- P(i);::B(J)
- Refutation
- P(i);XQ(I)
- Try
- Q(I);CHECK,XP(i)
- Vars
- S(g);CHECK,N_GUARD,P_SPINS(g)::QAR1(I),XS(g)
- Refutation
- S(g);XQ(I)
- Try
- P(E);
- Threat
- B(J)
- Vars
- R(a);CHECK,OGATE,XB(H)::QAR1(I),XR(a)
- S(g);CHECK,N_GUARD::QAR1(I),XS(g)
- R(a);N_GUARD::S(B)
- S(g);N_GUARD::QAR1(I)
- Refutation
- R(c);XP(E)
- Try
- Actual
- B(J);
- Vars
- R(a);CHECK,OGATE,XB(H)::QAR1(I),XR(a)
- S(g);CHECK,N_GUARD::QAR1(I),XS(g)
- R(a);N_GUARD,XR(A)::S(B)
- R(c);XP(E)::S(B),XR(c)
- R(a);N_GUARD::S(B)
- R(a);N_GUARD,P_PINP(D)::S(B)
- R(a);N_GUARD::S(B),XR(a)
- R(a);OGATE::R(A)+P(C)DCHECK,XR(a)
- R(c);N_GUARD::S(F)
- R(c);N_GUARD::S(F),XR(c)
- S(f);OGATE::R(A)+P(C)DCHECK,XS(f)
- S(f);N_GUARD,SBLOCK::B(J)
- S(g);N_GUARD::QAR1(I)
- P(h);N_GUARD::S(F)
- P(i);OGATE::QAB(I)
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