MESON Chess Problem Database

Problem Display
PID: 185029 (8/5K2/8/P1PkNR2/2r5/4QP2/1P3P2/8 w - - 0 1)

Sypniewski, Karol

British Chess Magazine, 1917

8/5K2/8/P1PkNR2/2r5/4QP2/1P3P2/8

#2

9 + 2

3713 Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.fxe4#
    • 1...Rxc5
      • 2.Qd2#
      • 2.Qd3#
  • Tries
    • 1.Qb3?
      • threat
        • 2.Qxc4#
      • 1...Kd4
        • 2.Sc6#
        • 2.Qxc4#
      • 1...Kxc5!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Sc6#
        • 2.Qd6#
      • 1...Kd4
        • 2.Qd6#
      • 1...Kxc5
        • 2.Sc6#
      • 1...Rxc5
        • 2.Qd2#
      • 1...Rc1
        • 2.Qd6#
      • 1...Rc2
        • 2.Qd6#
      • 1...Rc3
        • 2.Qd6#
      • 1...Ra4
        • 2.Qd6#
      • 1...Rb4
        • 2.Qd6#
      • 1...Rd4
        • 2.Qc6#
        • 2.Qd6#
      • 1...Re4
        • 2.Qd6#
      • 1...Rf4
        • 2.Qd6#
      • 1...Rg4
        • 2.Qd6#
      • 1...Rh4
        • 2.Qd6#

This anticipates 109515(1992)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • R(a);OGATE::P(D),XR(a)
  • Tries
    • Try
      • Q(C);P_PINR(a)
      • Threat
        • QAB1(C),XR(a)
      • Refutation
        • K(b);N_SPINR(a),P-FLIGHT,XP(F)
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT::QAR2(C)
      • K(b);P-FLIGHT,XP(F)::R(H)+S(G)
      • R(a);N_GUARD,SBLOCK,XP(F)::QAR(C)
      • R(a);::QAR1(C)
      • R(a);P_PINR(H)::QAR1(C)
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