MESON Chess Problem Database

Problem Display
PID: 242273 (1KB4b/8/Q2P4/1Pppk2N/3Np3/1P1p3R/5B2/8 w - - 0 1)

Kisis, Imants J

64 Shakhmatnoe obozrenie, 1988

1KB4b/8/Q2P4/1Pppk2N/3Np3/1P1p3R/5B2/8

#2

10 + 6

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...cxd4
      • 2.Bg3#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Sc6#
      • 1...cxd4
        • 2.Bg3#
      • 1...e3!
    • 1.Sf5?
      • threat
        • 2.Bg3#
      • 1...e3
        • 2.Rxe3#
      • 1...d4!
    • 1.Qa1?
      • threat
        • 2.Bg3#
      • 1...Kxd6
        • 2.Sf5#
      • 1...e3!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sf3#
      • 1...Kxd4
        • 2.Qa1#
      • 1...cxd4
        • 2.Bg3#

Anticipated by 110101(1988)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK,XS(D)::B(A)
  • Tries
    • Try
      • K(I);S_FLIGHT
      • Threat
        • S(D)
      • Vars
        • P(c);SBLOCK,XS(D)::B(A)
      • Refutation
        • P(b);
    • Try
      • S(D);
      • Threat
        • B(A)
      • Vars
        • P(b);OGATEB::R(C),XP(b)
      • Refutation
        • P(d);
    • Try
      • Q(G);
      • Threat
        • B(A)
      • Vars
        • K(e);S_FLIGHT,XP(H)::S(D)
      • Refutation
        • P(b);
  • Actual
    • R(C);P_PINP(b)
    • Threat
      • S(D)
    • Vars
      • K(e);N_SPINP(b),OGATEB,S_FLIGHT,XS(D)::QAB(G)
      • P(c);SBLOCK,XS(D)::B(A)
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