MESON Chess Problem Database

Problem Display
PID: 67512 (8/2p5/2BP1p1N/1P1pkP2/8/QN2r3/1P5P/4R1BK w - - 0 1)

Sapieha, JA

Chess, 1948

8/2p5/2BP1p1N/1P1pkP2/8/QN2r3/1P5P/4R1BK

#2

12 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2?
      • 1...Kd4
        • 2.Qc3#
        • 2.Qxe3#
      • 1...Kf4
        • 2.Qxe3#
      • 1...Rxe1
        • 2.Qg3#
      • 1...cxd6
        • 2.Qxe3#
      • 1...Re2
        • 2.Qg3#
      • 1...Re4
        • 2.Qg3#
      • 1...d4!
  • Keys
    • 1.Sc5!
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qxe3#
      • 1...Kxd6
        • 2.Sd3#
      • 1...Rxe1
        • 2.Qg3#
      • 1...cxd6
        • 2.Qxe3#
      • 1...Re2
        • 2.Qg3#
      • 1...Re4
        • 2.Sd3#
        • 2.Qg3#
      • 1...d4
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);
      • Vars
        • K(c);N_SPINR(a),S_FLIGHT::QAB1(F),XR(a)
        • R(a);N_SPINR(a),OGATE,P_PINB(B),XR(A)::QAB(F)
        • P(e);SBLOCK,XP(K)::QAR2(F),XR(a)
        • R(a);OGATE::QAB(F)
      • Refutation
        • P(b);
  • Actual
    • S(G);
    • Vars
      • K(c);S_FLIGHT::QAB1(F)
      • K(c);N_SPINR(a),S_FLIGHT::QAB1(F),XR(a)
      • K(c);N_SPINR(a),S_FLIGHT,XP(K)::QAB(F)+S(G)
      • R(a);N_SPINR(a),OGATE,P_PINB(B),XR(A)::QAB(F)
      • P(e);SBLOCK,XP(K)::QAR2(F),XR(a)
      • R(a);OGATE::QAB(F)
      • P(b);SBLOCK::S(G)
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