MESON Chess Problem Database

Problem Display
PID: 125345 (1BB2R1n/4p3/2KpP2R/2pNkN2/2P2p2/5P1Q/2p4P/8 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Themes-64, 1985

1BB2R1n/4p3/2KpP2R/2pNkN2/2P2p2/5P1Q/2p4P/8

#2

12 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sde3?
      • threat
        • 2.Sg4#
      • 1...fxe3
        • 2.Qg3#
      • 1...Sf7!
    • 1.Sxf4?
      • threat
        • 2.Sd3#
      • 1...Kxf4
        • 2.Qg3#
      • 1...c1S!
    • 1.Qg2?
      • threat
        • 2.Qe2#
        • 2.Qg7#
      • 1...c1Q
        • 2.Qg7#
      • 1...c1S
        • 2.Qb2#
        • 2.Qg7#
      • 1...c1B
        • 2.Qg7#
      • 1...Sg6
        • 2.Qe2#
      • 1...Sf7!
    • 1.Qg4?
      • threat
        • 2.Qxf4#
        • 2.Qg7#
      • 1...c1Q
        • 2.Qg7#
      • 1...c1B
        • 2.Qg7#
      • 1...Sf7
        • 2.Qxf4#
      • 1...Sg6!
    • 1.Qg3?
      • threat
        • 2.Qe1#
        • 2.Qxf4#
        • 2.Qg7#
      • 1...Sf7
        • 2.Qxf4#
      • 1...c1Q
        • 2.Qg7#
      • 1...c1S
        • 2.Qxf4#
        • 2.Qg7#
      • 1...c1B
        • 2.Qg7#
      • 1...c1R
        • 2.Qxf4#
        • 2.Qg7#
      • 1...Sg6
        • 2.Qe1#
      • 1...fxg3!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sg4#
        • 2.Sd7#
      • 1...exf6
        • 2.Bxd6#
      • 1...Sg6
        • 2.Sg4#
      • 1...Sf7
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • P(b);OGATEB,XS(E)::QAB(C)
      • Refutation
        • S(g);
    • Try
      • S(E);XP(b)
      • Threat
        • S(E)
      • Vars
        • K(d);OGATEB,S_FLIGHT,XS(E)::QAB1(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAB(C)
        • S(g);::QAR(C)
      • Refutation
        • S(g);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::QAB(C)
        • S(g);::QAB1(C),XP(b)
      • Refutation
        • S(g);
    • Try
      • Q(C);N_PINP(e),P_PINP(b)
      • Threat
        • DUALS(3)
      • Vars
        • S(g);::QAB1(C),XP(b)
        • P(a);::QAB(C)
        • S(g);::QAR(C)
      • Refutation
        • P(b);N_SPINP(b),P_SPINP(e),XQ(C)
  • Actual
    • S(E);
    • Threat
      • DUALS(2)
    • Vars
      • P(f);N_GUARD,XS(E)::B(J),XP(e)
      • S(g);::S(E)
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