MESON Chess Problem Database

Problem Display
PID: 258701 (b3Q2B/5pr1/p2PP3/1pPkNP2/r1R5/PpP5/1K1p4/3N1B2 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

Buletin Problemistic, 1988

b3Q2B/5pr1/p2PP3/1pPkNP2/r1R5/PpP5/1K1p4/3N1B2

#2

13 + 9

15601 Albrecht-Leiss-Degener Collection 2022
3713 Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Se3#
      • 2.Qxa8#
    • 1...Rg2
      • 2.Se3#
      • 2.Bxg2#
      • 2.Qxa8#
    • 1...Rg3
      • 2.Qxa8#
    • 1...Rg4
      • 2.Se3#
      • 2.Qxa8#
    • 1...Rg5
      • 2.Se3#
      • 2.Qxa8#
    • 1...Rg6
      • 2.Se3#
      • 2.Qxa8#
    • 1...Rh7
      • 2.Se3#
      • 2.Bg2#
      • 2.Qxa8#
    • 1...Rg8
      • 2.Se3#
    • 1...fxe6
      • 2.Qxe6#
  • Tries
    • 1.Sd7?
      • threat
        • 2.Qxa8#
      • 1...Kc6
        • 2.Qxa8#
      • 1...Rg8
        • 2.Sb6#
      • 1...Bc6
        • 2.Se3#
      • 1...Bb7!
    • 1.Bg2+?
      • 1...Rxg2
        • 2.Se3#
        • 2.Qxa8#
      • 1...Kxe5!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Se3#
      • 1...Kxc4
        • 2.Se3#
      • 1...Rxc4
        • 2.Qxa8#
      • 1...bxc4
        • 2.Qxa8#
      • 1...Rg3
        • 2.Sf4#

This anticipates 15914(1989)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(h);::QAB(L),XB(i)
    • R(h);::S(A)
    • P(g);OGATE,XP(K)::QAB1(L),XP(g)
  • Tries
    • Try
      • S(H);
      • Threat
        • QAB(L),XB(i)
      • Vars
        • K(e);S_FLIGHT::QAB(L),XB(i)
        • R(h);::S(H)
        • B(i);SBLOCK::S(A)
      • Refutation
        • B(i);
    • Try
      • B(B);CHECK
      • Refutation
        • K(e);P-FLIGHT,P_SPINR(h),XS(H)
  • Actual
    • S(H);
    • Threat
      • S(A)
    • Vars
      • K(e);S_FLIGHT,XR(F)::S(A)
      • R(c);SBLOCK,XR(F)::QAB(L),XB(i)
      • P(d);SBLOCK,XR(F)::QAB(L),XB(i)
      • R(h);::S(H)
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