MESON Chess Problem Database

Problem Display
PID: 235056 (b7/2KN1Qp1/8/1p1P4/1Bkb4/2P1R3/4pPr1/N1nr3B w - - 0 1)

Shanshin, Valery Yurevich

64 Shakhmatnoe obozrenie, 1985

b7/2KN1Qp1/8/1p1P4/1Bkb4/2P1R3/4pPr1/N1nr3B

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe3
      • 2.Se5#
    • 1...Bc5
      • 2.Se5#
    • 1...Be5+
      • 2.Sxe5#
    • 1...Bb6+
      • 2.Sxb6#
    • 1...Bf6
      • 2.Sb6#
    • 1...Ba7
      • 2.Se5#
    • 1...Bc6
      • 2.dxc6#
  • Tries
    • 1.Re4?
      • threat
        • 2.Se5#
      • 1...Kd3
        • 2.Rxd4#
      • 1...Sd3
        • 2.Sb6#
        • 2.Rxd4#
      • 1...Rg5!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Sb6#
      • 1...Kxd5
        • 2.Qf7#
      • 1...Rg6
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • B(f);N_GUARD,XR(E)::S(I)
    • B(f);N_GUARD::S(I)
    • B(f);CHECK,N_GUARD::S(I),XB(f)
    • B(i);OGATE::QAB(J)+P(G),XB(i)
  • Tries
    • Try
      • R(E);P_PINB(f)
      • Threat
        • S(I)
      • Vars
        • K(e);N_SPINB(f),S_FLIGHT::R1(E),XB(f)
      • Refutation
        • R(d);
  • Actual
    • Q(J);P_PINB(f)
    • Threat
      • S(I)
    • Vars
      • K(e);N_SPINB(f),OGATEB,P_SPINR(d),S_FLIGHT,XP(G)::QAB(J)
      • R(d);::S(I)
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