MESON Chess Problem Database

Problem Display
PID: 169047 (1N1R4/3pp1p1/3Pp2r/2pk4/P1N3Q1/2K1pn2/2P5/4r2q w - - 0 1)

Basisty, Mark Borisovich

Zamanov, Vidadi

Comm., Liylu-75 JT (SuperProblem), 2016

1N1R4/3pp1p1/3Pp2r/2pk4/P1N3Q1/2K1pn2/2P5/4r2q

#2

8 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Qxf3#
    • 1...Qh2
      • 2.Qxf3#
  • Tries
    • 1.Sc6?
      • threat
        • 2.Sxe7#
      • 1...Kxc6
        • 2.Qe4#
      • 1...dxc6
        • 2.dxe7#
      • 1...exd6
        • 2.Se7#
      • 1...Qh4!
    • 1.Qf4?
      • threat
        • 2.Sb6#
      • 1...Rb1
        • 2.Sxe3#
      • 1...Se5
        • 2.Qxe5#
      • 1...e5!
  • Keys
    • 1.Rxd7!
      • threat
        • 2.dxe7#
      • 1...exd6
        • 2.Rxd6#
      • 1...Qh2
        • 2.Qxf3#
      • 1...Se5
        • 2.Sb6#
      • 1...e5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(b);N_GUARD::QAB(E),XS(d)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G),XP(j)
      • Vars
        • K(f);S_FLIGHT,XS(G)::QAB(E)
        • P(i);SBLOCK,XS(G)::R(H)+P(F),XP(j)
        • P(j);XP(F)::S(G)
      • Refutation
        • Q(b);
    • Try
      • Q(E);
      • Threat
        • S(D)
      • Vars
        • R(a);N_GUARD::S(D),XP(c)
        • S(d);N_GUARD::QAR1(E),XS(d)
      • Refutation
        • P(g);
  • Actual
    • R(H);XP(i)
    • Threat
      • R(H)+P(F),XP(j)
    • Vars
      • P(j);OGATE,P_SPINP(j),XP(F)::R1(H),XP(j)
      • Q(b);N_GUARD::QAB(E),XS(d)
      • S(d);SBLOCK::S(D)
      • P(g);SBLOCK::S(D)
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