MESON Chess Problem Database

Problem Display
PID: 244117 (8/1KPp2Q1/1PP1NP1p/R1b1k2P/2rN1p2/2B2P2/B3P3/3R4 w - - 0 1)

Benedek, Attila

Sachove umeni (Ceskoslovensky sach), 1972

8/1KPp2Q1/1PP1NP1p/R1b1k2P/2rN1p2/2B2P2/B3P3/3R4

#2

15 + 6

15148 Sadier Collection 2021
3713 Snap 2024

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5+?
      • 1...Kd6
        • 2.c8S#
      • 1...hxg5!
  • Keys
    • 1.Qg4!
      • 1...Kd5
        • 2.Sc2#
      • 1...Kd6
        • 2.Sb5#
      • 1...Kxf6
        • 2.Qg7#
      • 1...Rxc3
        • 2.Qxf4#
      • 1...Rxd4
        • 2.Qxf4#
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Qxe6#
      • 1...Ra4
        • 2.Qxf4#
      • 1...Rb4
        • 2.Qxf4#
      • 1...d5
        • 2.Qxf4#
      • 1...d6
        • 2.Qf5#

Anticipated by 274779(1963)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(O);CHECK
      • Vars
        • K(d);N_SPINB(c),S_FLIGHT::P=S
      • Refutation
        • P(e);XQ(O)
  • Actual
    • Q(O);
    • Vars
      • K(d);P-FLIGHT,P_SPINR(a)::R(A)+S(F)
      • K(d);N_SPINB(c),S_FLIGHT::R(A)+S(F),DCHECK
      • K(d);N_SPINB(c),OGATEB,S_FLIGHT,XP(L)::QAB1(O)
      • R(a);XB(D)::QAB1(O),XP(b)
      • R(a);P_SPINR(a),XS(F)::QAB1(O),XP(b)
      • P(f);XP(J)::B(D)+S(F),DCHECK,XP(f)
      • P(f);OGATE,XS(K)::QAR1(O),XP(f)
      • R(a);::QAB1(O),XP(b)
      • R(a);P_PINP(I)::QAB1(O),XP(b)
      • P(f);N_SPINB(c),SBLOCK::QAB1(O),XP(b)
      • P(f);SBLOCK::QAR1(O)
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Developed and maintained by Brian Stephenson.
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