MESON Chess Problem Database

Problem Display
PID: 68325 (3R2K1/4pPn1/1p5Q/3pkp2/3pN1P1/1N3p2/3Pn3/BB2R3 w - - 0 1)

Pilchenko, Viacheslav Karlovich

2nd Prize, Chervoni Girnik-80 JT, 2004

3R2K1/4pPn1/1p5Q/3pkp2/3pN1P1/1N3p2/3Pn3/BB2R3

#2

11 + 9

56 The Problemist 2006
15323 FIDE Album (2004-2006) 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Sc1
      • 2.Bxd4#
    • 1...Sg1
      • 2.Bxd4#
    • 1...Sc3
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sxg3#
      • 2.Bxd4#
    • 1...Sf4
      • 2.Bxd4#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Sxf3#
        • 2.Sc6#
      • 1...Sxd4
        • 2.Sf2#
        • 2.Sg3#
        • 2.Sc5#
        • 2.Sd6#
        • 2.Sf6#
      • 1...f2
        • 2.Sf3#
        • 2.Sc6#
      • 1...fxg4!
    • 1.Sc3?
      • threat
        • 2.Rxd5#
      • 1...dxc3
        • 2.d4#
      • 1...e6!
    • 1.Qxg7+?
      • 1...Ke6
        • 2.Sg5#
        • 2.f8S#
      • 1...Kf4!
    • 1.f8Q?
      • threat
        • 2.Qfxg7#
      • 1...Se6
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qxe7#
        • 2.Qxf5#
      • 1...Se8
        • 2.Qxe7#
        • 2.Qxf5#
      • 1...fxg4!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sd7#
      • 1...Ke6
        • 2.Sd7#
      • 1...exf6
        • 2.Qe3#
      • 1...Se6
        • 2.Rxd5#
      • 1...e6
        • 2.Bxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::B(A),XP(c)
    • S(a);N_SPINP(c)::R(C)+S(F),XS(a)
  • Tries
    • Try
      • S(E);XP(c)
      • Threat
        • DUALS(2)
      • Refutation
        • P(f);XP(G)
    • Try
      • S(F);N_PINP(c),P_PINS(a)
      • Threat
        • R1(J),XP(d)
      • Vars
        • P(c);OGATE,P_SPINP(c),XS(F)::P(D)
      • Refutation
        • P(h);
    • Try
      • Q(H);CHECK,XS(i)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT
    • Try
      • P(I);
      • Threat
        • QAB(I),XS(i)
      • Vars
        • S(i);N_GUARD::QAR1(I),XP(f)
      • Refutation
        • P(f);XP(G)
  • Actual
    • S(F);P_PINS(a)
    • Threat
      • S(F)
    • Vars
      • K(e);N_SPINP(c),P-FLIGHT::QAR(H)+S(F)
      • P(h);SBLOCK,XS(F)::QAR2(H)
      • S(i);SBLOCK::R1(J),XP(d)
      • P(h);SBLOCK::B(A),XP(c)
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