MESON Chess Problem Database

Problem Display
PID: 63686 (2K4B/3Q2rp/2R1bk2/4p1np/7P/4Nq1p/7b/5Rr1 w - - 0 1)

Ellison, Wallace D

Chess, 1946

2K4B/3Q2rp/2R1bk2/4p1np/7P/4Nq1p/7b/5Rr1

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.Rxe6#
      • 2.Qxe6#
    • 1...Sf7
      • 2.Rxe6#
      • 2.Qxe6#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Se4
        • 2.Rxe6#
      • 1...Sf7
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...e4+!
    • 1.Kb8?
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Se4
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...Sf7
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...e4+!
    • 1.Kd8?
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Se4
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...Sf7+!
  • Keys
    • 1.Kb7!
      • threat
        • 2.Qxg7#
      • 1...Kg6
        • 2.Qxg7#
      • 1...Se4
        • 2.Rxe6#
      • 1...Sf7
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Threat
        • QAB1(E),XR(j)
      • Vars
        • K(i);N_SPINQ(c),N_SPINR(j),P-FLIGHT::QAR1(E),XR(j)
        • S(f);N_GUARD::R1(D),XB(h)
      • Refutation
        • P(e);CHECK
    • Try
      • K(F);N_SPINQ(E),P-FLIGHT
      • Threat
        • QAB1(E),XR(j)
      • Vars
        • K(i);N_SPINQ(c),N_SPINR(j),P-FLIGHT::QAR1(E),XR(j)
      • Refutation
        • P(e);CHECK
    • Try
      • K(F);N_SPINQ(E),P-FLIGHT
      • Threat
        • QAB1(E),XR(j)
      • Vars
        • K(i);N_SPINQ(c),N_SPINR(j),P-FLIGHT::QAR1(E),XR(j)
      • Refutation
        • S(f);CHECK
  • Actual
    • K(F);P_SPINR(D),S_FLIGHT
    • Threat
      • QAB1(E),XR(j)
    • Vars
      • K(i);N_SPINQ(c),N_SPINR(j),P-FLIGHT::QAR1(E),XR(j)
      • S(f);N_PINR(D)::R1(D),XB(h)
      • S(f);N_PINQ(E)::QAR1(E),XB(h)
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