MESON Chess Problem Database

Problem Display
PID: 240147 (1r6/p1B1p3/4k2N/QnP2pP1/3R4/pNp5/P1P5/1K6 w - - 0 1)

Zilahi, Zoltan

Schakend Nederland, 1964

1r6/p1B1p3/4k2N/QnP2pP1/3R4/pNp5/P1P5/1K6

#2

10 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb5?
      • threat
        • 2.Qe2#
        • 2.Qc4#
        • 2.Qc6#
        • 2.Qd7#
      • 1...Rb6
        • 2.Qe2#
        • 2.Qc4#
        • 2.Qd7#
      • 1...Rd8
        • 2.Qe2#
      • 1...Rxb5!
    • 1.Qa6+?
      • 1...Rb6
        • 2.Qc8#
      • 1...Sd6!
  • Keys
    • 1.c6!
      • threat
        • 2.Sc5#
      • 1...Sxd4
        • 2.Qe5#
      • 1...Sxc7
        • 2.Qxf5#
      • 1...Sd6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(F);XS(c)
      • Threat
        • DUALS(4)
      • Vars
        • R(h);::QAR(F)
      • Refutation
        • R(h);P_PINS(D),XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB(F)
      • Refutation
        • S(c);P_PINS(D),P_SPINS(c)
  • Actual
    • P(G);
    • Threat
      • S(D)
    • Vars
      • S(c);OGATE,P_PINS(D),XR(E)::QAR1(F)
      • S(c);OGATE,P_PINS(D),XB(J)::QAB1(F),XP(d)
      • S(c);OGATE,P_PINS(D)::QAB1(F)
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