MESON Chess Problem Database

Problem Display
PID: 15914 (B2Q3b/1rp5/3PP2p/2PNkPp1/5R1r/5PpP/4p1K1/2B1N3 w - - 0 1)

Pankratiev, Aleksandr Nikolaevich

1st Prize, Israel Ring Ty., 1989

B2Q3b/1rp5/3PP2p/2PNkPp1/5R1r/5PpP/4p1K1/2B1N3

#2

13 + 9

721 Variantim 1991
3713 Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sd3#
      • 2.Qxh8#
    • 1...Rb2
      • 2.Sd3#
      • 2.Bxb2#
      • 2.Qxh8#
    • 1...Rb3
      • 2.Qxh8#
    • 1...Rb4
      • 2.Sd3#
      • 2.Qxh8#
    • 1...Rb5
      • 2.Sd3#
      • 2.Qxh8#
    • 1...Rb6
      • 2.Sd3#
      • 2.Qxh8#
    • 1...Ra7
      • 2.Sd3#
      • 2.Bb2#
      • 2.Qxh8#
    • 1...Rb8
      • 2.Sd3#
    • 1...cxd6
      • 2.Qxd6#
  • Tries
    • 1.Se7?
      • threat
        • 2.Qxh8#
      • 1...Kf6
        • 2.Qxh8#
      • 1...Rb8
        • 2.Sg6#
      • 1...Bf6
        • 2.Sd3#
      • 1...Bg7!
    • 1.Bb2+?
      • 1...Rxb2
        • 2.Sd3#
        • 2.Qxh8#
      • 1...Kxd5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sd3#
      • 1...Kxf4
        • 2.Sd3#
      • 1...Rxf4
        • 2.Qxh8#
      • 1...gxf4
        • 2.Qxh8#
      • 1...Rb3
        • 2.Sc4#

Anticipated by 258701(1988)

FEATURES

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