MESON Chess Problem Database
Problem Display
PID: 142101 (K1R5/5n2/1pn1p3/1N1k4/1P2r1N1/3P4/4rQ2/7B w - - 0 1)
Keeble, John Frederick
British Chess Magazine 06. Ty., 1890
#2
8 + 7
SOLUTION
- SOUND
- Sets
- 1...Re1
- 2.Qa2#
- 1...Ra2+
- 2.Qxa2#
- 1...Rb2
- 2.Bxe4#
- 1...Rc2
- 2.Bxe4#
- 1...Rd2
- 2.Bxe4#
- 1...Rxf2
- 2.Bxe4#
- 1...Re3
- 2.Qa2#
- 1...Sxb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sce5
- 2.Sf6#
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Scd8
- 2.Qd4#
- 1...Sfe5
- 2.Sf6#
- 1...Sd6
- 2.Sc3#
- 2.Sc7#
- 1...e5
- 2.Qxf7#
- 1...Re1
- Tries
- 1.Qxb6?
- threat
- 2.Qc5#
- 2.Qxc6#
- 1...Sxb4
- 2.Sc3#
- 2.Sc7#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...e5
- 2.Qxc6#
- 1...Rc2
- 2.Bxe4#
- 1...Sd4
- 2.Sc3#
- 2.Sc7#
- 2.Rc5#
- 2.Qxd4#
- 2.Qc5#
- 1...Sa5
- 2.Sc3#
- 2.Sc7#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Sce5
- 2.Sf6#
- 2.Sc3#
- 2.Sc7#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Sa7
- 2.Sc3#
- 2.Sc7#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Se7
- 2.Sc3#
- 2.Sc7#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Sb8
- 2.Sc3#
- 2.Sc7#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Scd8
- 2.Sc3#
- 2.Sc7#
- 2.Rc5#
- 2.Qd4#
- 2.Qc5#
- 1...Sfe5
- 2.Sf6#
- 2.Qc5#
- 1...Sfd8
- 2.Qc5#
- 1...Ra2+!
- threat
- 1.Qxe2?
- threat
- 2.Bxe4#
- 2.Qa2#
- 2.Qxe4#
- 2.dxe4#
- 1...Sxb4
- 2.Bxe4#
- 2.Qxe4#
- 2.dxe4#
- 1...e5
- 2.Qa2#
- 1...Sg5
- 2.Qa2#
- 1...Sd4
- 2.Bxe4#
- 2.Qxe4#
- 2.dxe4#
- 1...Sa5
- 2.Bxe4#
- 2.Qxe4#
- 2.dxe4#
- 1...Sce5
- 2.Se3#
- 2.Sf6#
- 2.Bxe4#
- 2.Qxe4#
- 2.dxe4#
- 1...Sfe5
- 2.Se3#
- 2.Sf6#
- 2.Bxe4#
- 2.Qxe4#
- 2.dxe4#
- 1...Sd6!
- threat
- 1.Qh2?
- threat
- 2.Sf6#
- 1...Ra2+
- 2.Qxa2#
- 1...Rxh2
- 2.Bxe4#
- 1...Rf2
- 2.Se3#
- 2.Bxe4#
- 1...e5!
- threat
- 1.Qf4?
- threat
- 2.Sf6#
- 1...e5
- 2.Qxf7#
- 1...Ra2+!
- threat
- 1.Qf5+?
- 1...Sce5
- 2.Sf6#
- 1...Sfe5
- 2.Sf6#
- 1...e5
- 2.Sf6#
- 2.Qxf7#
- 1...exf5!
- 1...Sce5
- 1.dxe4+?
- 1...Rxe4
- 2.Qa2#
- 1...Kc4!
- 1...Rxe4
- 1.Qxb6?
- Keys
- 1.Rc7!
- 1...Ra2+
- 2.Qxa2#
- 1...Rxf2
- 2.Bxe4#
- 1...Sxb4
- 2.Qd4#
- 1...e5
- 2.Qxf7#
- 1...Sg5
- 2.Rd7#
- 1...Re1
- 2.Qa2#
- 1...Rb2
- 2.Bxe4#
- 1...Rc2
- 2.Bxe4#
- 1...Rd2
- 2.Bxe4#
- 1...Re3
- 2.Qa2#
- 1...Sd4
- 2.Qxd4#
- 1...Sa5
- 2.Qd4#
- 1...Sce5
- 2.Sf6#
- 2.Qd4#
- 1...Sa7
- 2.Qd4#
- 1...Se7
- 2.Qd4#
- 1...Sb8
- 2.Qd4#
- 1...Scd8
- 2.Qd4#
- 1...Sfe5
- 2.Sf6#
- 1...Sd6
- 2.Sc3#
- 1...Sh6
- 2.Rd7#
- 1...Sfd8
- 2.Rd7#
- 1...Sh8
- 2.Rd7#
- 1...Ra2+
- 1.Rc7!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 0
- Sets
- R(a);OGATE::QAB(B)
- R(a);CHECK,OGATE::QAB(B),XR(a)
- R(a);N_GUARD::B(A),XR(b)
- R(a);N_GUARD,XQ(B)::B(A),XR(b)
- S(e);N_GUARD,XP(D)::QAR1(B)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
- S(g);SBLOCK::S(E)
- P(f);OGATEB::QAB(B),XS(g)
- Tries
- Try
- Q(B);XP(d)
- Threat
- DUALS(2)
- Vars
- P(f);::QAB1(B),XS(e)
- R(a);N_GUARD::B(A),XR(b)
- S(g);::QAR1(B)
- Refutation
- R(a);CHECK
- Try
- Q(B);XR(a)
- Threat
- DUALS(4)
- Vars
- P(f);::QAB(B)
- S(g);::QAB(B)
- Refutation
- S(g);
- Try
- Q(B);
- Threat
- S(E)
- Vars
- R(a);CHECK,OGATE::QAB(B),XR(a)
- R(a);N_GUARD,XQ(B)::B(A),XR(b)
- Refutation
- P(f);
- Try
- Q(B);
- Threat
- S(E)
- Vars
- P(f);OGATEB::QAB(B),XS(g)
- Refutation
- R(a);CHECK
- Try
- Q(B);CHECK
- Vars
- S(e);P_SPINS(e)::S(E)
- S(g);P_SPINS(g)::S(E)
- Refutation
- P(f);XQ(B)
- Try
- P(C);CHECK,XR(b)
- Vars
- R(a);OGATE,P_SPINR(a),XP(C)::QAB(B)
- Refutation
- K(c);P_SPINS(e),S_FLIGHT
- Try
- Actual
- R(H);
- Vars
- R(a);CHECK,OGATE::QAB(B),XR(a)
- R(a);N_GUARD,XQ(B)::B(A),XR(b)
- S(e);N_GUARD,XP(D)::QAR1(B)
- P(f);OGATEB::QAB(B),XS(g)
- S(g);N_GUARD::R(H)
- R(a);OGATE::QAB(B)
- R(a);N_GUARD::B(A),XR(b)
- S(e);N_GUARD::QAR1(B),XS(e)
- S(e);N_GUARD::QAR1(B)
- S(g);SBLOCK::S(E)
- S(g);SBLOCK::S(F)
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