MESON Chess Problem Database

Problem Display
PID: 143454 (5K2/p7/N4p1R/pP1k2p1/P1N1n1Q1/4p1n1/1B2P3/7R w - - 0 1)

Anonymous

Hackney Mercury, 1894

5K2/p7/N4p1R/pP1k2p1/P1N1n1Q1/4p1n1/1B2P3/7R

#2

10 + 8

15 British Chess Magazine 1894

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qe6#
    • 1...Sc5
      • 2.Sc7#
    • 1...Sd6
      • 2.Sxe3#
      • 2.Rd1#
    • 1...f5
      • 2.Sxe3#
  • Tries
    • 1.Sb6+?
      • 1...Kd6
        • 2.Qd7#
      • 1...axb6!
    • 1.Rd1+?
      • 1...Kxc4
        • 2.Qe6#
      • 1...Sd2!
    • 1.R6h4?
      • 1...Kxc4
        • 2.Qe6#
      • 1...Sxh1
        • 2.Qxe4#
      • 1...Sxe2
        • 2.Qxe4#
      • 1...gxh4
        • 2.Qg8#
      • 1...Sf5
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qd7#
      • 1...Sf1
        • 2.Qxe4#
      • 1...Sh5
        • 2.Qxe4#
      • 1...Sf2
        • 2.Qd7#
      • 1...Sc3
        • 2.Qd7#
      • 1...Sc5
        • 2.Sc7#
      • 1...Sd6
        • 2.Sxe3#
        • 2.Rd1#
      • 1...f5!
    • 1.Rxf6?
      • threat
        • 2.Sxe3#
        • 2.Qe6#
      • 1...Kxc4
        • 2.Qe6#
      • 1...Sxf6
        • 2.Rd1#
      • 1...Sf1
        • 2.Qe6#
      • 1...Sc3
        • 2.Rd6#
      • 1...Sc5
        • 2.Sxe3#
        • 2.Sc7#
        • 2.Rd6#
        • 2.Qd4#
      • 1...Sf5!
    • 1.Qf5+?
      • 1...Kxc4
        • 2.Qe6#
      • 1...Sxf5!
    • 1.Qd7+?
      • 1...Kxc4
        • 2.Qe6#
        • 2.Qd3#
        • 2.Qf7#
      • 1...Sd6!
  • Keys
    • 1.R1h4!
      • 1...Kxc4
        • 2.Qe6#
      • 1...Sxe2
        • 2.Qxe4#
      • 1...gxh4
        • 2.Qg8#
      • 1...Sf5
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qd7#
      • 1...Sf1
        • 2.Qxe4#
      • 1...Sh1
        • 2.Qxe4#
      • 1...Sh5
        • 2.Qxe4#
      • 1...Sf2
        • 2.Qd7#
      • 1...Sc3
        • 2.Qd7#
      • 1...Sc5
        • 2.Sc7#
      • 1...Sd6
        • 2.Sxe3#
      • 1...f5
        • 2.Sxe3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINS(c),S_FLIGHT,XS(E)::QAB(F)
    • S(c);SBLOCK::S(H)
    • P(g);::S(E),XP(a)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINP(g)::QAR1(F)
      • Refutation
        • P(h);XS(E)
    • Try
      • R(A);CHECK
      • Vars
        • K(e);P_SPINS(c),S_FLIGHT,XS(E)::QAB(F)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • R(I);
      • Vars
        • K(e);P_SPINS(c),S_FLIGHT,XS(E)::QAB(F)
        • S(b);N_GUARD,XR(A)::QAB1(F),XS(c)
        • S(b);N_GUARD,XP(C)::QAB1(F),XS(c)
        • P(f);OGATE,XR(I)::QAB(F)
        • S(b);N_GUARD::QAB1(F),XS(c)
        • S(c);N_GUARD::QAR2(F)
        • S(c);SBLOCK::S(H)
      • Refutation
        • P(g);
    • Try
      • R(I);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • K(e);P_SPINS(c),S_FLIGHT,XS(E)::QAB(F)
        • S(c);N_GUARD,XR(I)::R(A)
        • S(b);::QAB1(F)
        • S(c);N_GUARD::R1(I)
      • Refutation
        • S(b);
    • Try
      • Q(F);CHECK
      • Vars
        • K(e);S_FLIGHT,XS(E)::QAB(F)
      • Refutation
        • S(b);XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • S(c);P_SPINS(c)
  • Actual
    • R(A);
    • Vars
      • K(e);P_SPINS(c),S_FLIGHT,XS(E)::QAB(F)
      • S(b);N_GUARD,XP(C)::QAB1(F),XS(c)
      • P(f);OGATE,XR(A)::QAB(F)
      • S(b);N_GUARD::QAB1(F),XS(c)
      • S(c);N_GUARD::QAR2(F)
      • S(c);SBLOCK::S(H)
      • S(c);SBLOCK::S(E),XP(a)
      • P(g);::S(E),XP(a)
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