MESON Chess Problem Database

Problem Display
PID: 71089 (8/8/2K5/2Q5/8/2p5/1PrPB3/RNkN4 w - - 0 1)

Sallay, Bela Albert

La Settimana Enigmistica, 1935

8/8/2K5/2Q5/8/2p5/1PrPB3/RNkN4

#2

8 + 3

5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2
      • 2.Sa3#
    • 1...cxd2
      • 2.Sa3#
      • 2.Sbc3#
  • Tries
    • 1.Sdxc3?
      • 1...Kxb2
        • 2.Qa3#
      • 1...Rxb2
        • 2.Sa2#
      • 1...Rxc3
        • 2.Qxc3#
      • 1...Rxd2!
    • 1.Bd3?
      • 1...Kxd1
        • 2.Qg1#
      • 1...Rxd2
        • 2.Sa3#
        • 2.Sbxc3#
      • 1...cxb2
        • 2.Qxc2#
      • 1...cxd2
        • 2.Sa3#
        • 2.Sbc3#
        • 2.Qxc2#
      • 1...Rxb2!
  • Keys
    • 1.Qg1!
      • 1...cxb2+
        • 2.Sdc3#
      • 1...cxd2+
        • 2.Sbc3#
      • 1...Rxb2
        • 2.Se3#
      • 1...Rxd2
        • 2.Sa3#

Anticipated by 149965(1923)

This anticipates 262816(1952)

There are these versions: 51824

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(b);P_SPINP(c),SBLOCK,XP(E)::R(A)+S(B)
  • Tries
    • Try
      • S(C);XP(c)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(D)::QAB1(G)
        • R(b);SBLOCK,XP(D)::QAR(G)+S(C),DCHECK
        • R(b);OGATE,P_PINQ(G),P_SPINR(b),XS(C)::QAR2(G),XR(b)
      • Refutation
        • R(b);XP(E)
    • Try
      • B(F);
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(C)::QAR(G)
        • P(c);OGATE,P_PINQ(G),P_SPINR(b),XP(D)::QAR1(G),XR(b)
      • Refutation
        • R(b);P_SPINP(c),XP(D)
  • Actual
    • Q(G);
    • Vars
      • P(c);CHECK,SBLOCK,XP(D)::QAR(G)+S(C)
      • P(c);CHECK,SBLOCK,XP(E)::R(A)+S(B)
      • R(b);SBLOCK,XP(D)::QAR(G)+S(C)
      • R(b);SBLOCK,XP(E)::R(A)+S(B)
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