MESON Chess Problem Database

Problem Display
PID: 144060 (5N2/8/8/K2p4/2PpP1P1/3k2P1/3P4/3Q4 w - - 0 1)

Anonymous

The Times, 1890

5N2/8/8/K2p4/2PpP1P1/3k2P1/3P4/3Q4

#2

8 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qc2#
    • 1...Kxe4
      • 2.Qe2#
  • Tries
    • 1.Se6?
      • 1...Kxc4
        • 2.Qc2#
      • 1...Kxe4
        • 2.Qe2#
      • 1...dxc4
        • 2.Sc5#
      • 1...dxe4!
    • 1.Sg6?
      • 1...Kxc4
        • 2.Qc2#
      • 1...Kxe4
        • 2.Qe2#
      • 1...dxe4
        • 2.Se5#
      • 1...dxc4!
    • 1.cxd5?
      • 1...Kc4
        • 2.Qc2#
      • 1...Kxe4!
    • 1.c5?
      • 1...Kc4
        • 2.Qc2#
      • 1...Kxe4
        • 2.Qe2#
      • 1...dxe4!
    • 1.exd5?
      • 1...Ke4
        • 2.Qe2#
      • 1...Kxc4!
    • 1.e5?
      • 1...Kxc4
        • 2.Qc2#
      • 1...Ke4
        • 2.Qe2#
      • 1...dxc4!
  • Keys
    • 1.Sd7!
      • 1...Kxc4
        • 2.Qc2#
      • 1...Kxe4
        • 2.Qe2#
      • 1...dxc4
        • 2.Sc5#
      • 1...dxe4
        • 2.Se5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT,XP(D)::QAR2(A)
    • K(a);S_FLIGHT,XP(E)::QAR2(A)
  • Tries
    • Try
      • S(H);
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAR2(A)
        • K(a);S_FLIGHT,XP(E)::QAR2(A)
        • P(c);SBLOCK,XP(D)::S(H)
      • Refutation
        • P(c);XP(E)
    • Try
      • S(H);
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAR2(A)
        • K(a);S_FLIGHT,XP(E)::QAR2(A)
        • P(c);SBLOCK,XP(E)::S(H)
      • Refutation
        • P(c);XP(D)
    • Try
      • P(D);XP(c)
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • P(D);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
        • K(a);S_FLIGHT,XP(E)::QAR2(A)
      • Refutation
        • P(c);XP(E)
    • Try
      • P(E);XP(c)
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT,XP(D)::QAR2(A)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • P(c);XP(D)
  • Actual
    • S(H);
    • Vars
      • K(a);S_FLIGHT,XP(D)::QAR2(A)
      • K(a);S_FLIGHT,XP(E)::QAR2(A)
      • P(c);SBLOCK,XP(D)::S(H)
      • P(c);SBLOCK,XP(E)::S(H)
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