MESON Chess Problem Database

Problem Display
PID: 207914 (b1n4B/3B4/4p2p/1p1RPkpK/qN2p3/1pb3PP/rN3pP1/1Q1R1r2 w - - 0 1)

Golin, Grigory N

Deutsche Schachblatter, 1983

b1n4B/3B4/4p2p/1p1RPkpK/qN2p3/1pb3PP/rN3pP1/1Q1R1r2

#2

12 + 14

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe5
      • 2.Rxe5#
    • 1...g4
      • 2.hxg4#
  • Tries
    • 1.S4d3?
      • threat
        • 2.g4#
      • 1...e3
        • 2.Sb4#
      • 1...g4
        • 2.hxg4#
      • 1...exd3!
    • 1.Be8?
      • threat
        • 2.Bg6#
      • 1...exd5
        • 2.Bd7#
      • 1...Se7!
    • 1.Qc1?
      • threat
        • 2.g4#
      • 1...e3
        • 2.Qb1#
      • 1...g4
        • 2.Qf4#
        • 2.hxg4#
      • 1...Bd2!
  • Keys
    • 1.S2d3!
      • threat
        • 2.g4#
      • 1...exd3
        • 2.Qxd3#
      • 1...e3
        • 2.Sb2#
      • 1...g4
        • 2.hxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(e);OGATE,P_SPINB(e),XP(I)::R1(H),XB(e)
    • P(j);OGATE::P(F),XP(j)
  • Tries
    • Try
      • S(G);N_PINP(g),P_PINP(k)
      • Threat
        • P(E)
      • Vars
        • P(g);::QAB(A)+S(G)
        • P(j);OGATE::P(F),XP(j)
      • Refutation
        • P(g);N_SPINP(k),P_SPINP(g),XS(G)
    • Try
      • B(K);
      • Threat
        • B(K)
      • Vars
        • P(k);OGATEB,XR(H)::B(K)
      • Refutation
        • S(n);
    • Try
      • Q(A);N_PINP(g),P_PINP(k)
      • Threat
        • P(E)
      • Vars
        • P(g);OGATEB::QAB(A)
      • Refutation
        • B(e);
  • Actual
    • S(C);N_PINP(g),P_PINP(k)
    • Threat
      • P(E)
    • Vars
      • P(g);N_SPINP(k),OGATE,P_SPINP(g),XS(C)::QAB(A),XP(g)
      • P(g);::QAB(A)+S(C)
      • P(j);OGATE::P(F),XP(j)
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