MESON Chess Problem Database

Problem Display
PID: 48165 (1b6/5R2/4PNpp/n1pP1k2/4R2p/rp5P/4N3/2Q2K2 w - - 0 1)

Vasilenko, Anatoly Grigorovich

1st Place, Match: Heroic Cities, 1988-1990

1b6/5R2/4PNpp/n1pP1k2/4R2p/rp5P/4N3/2Q2K2

#2

9 + 9

4827 FIDE Album (1989-1991) 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.Qxf4#
    • 1...Ba7
      • 2.Qf4#
    • 1...c4
      • 2.Sd4#
  • Tries
    • 1.Re3?
      • threat
        • 2.Sh7#
      • 1...Kg5
        • 2.Re5#
      • 1...g5
        • 2.Qb1#
      • 1...Be5!
    • 1.Rg4?
      • threat
        • 2.Sd7#
      • 1...Ke5
        • 2.Qf4#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Be5
        • 2.Qb1#
      • 1...g5!
    • 1.Re5+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Bxe5!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Sh7#
      • 1...Kg5
        • 2.Rg4#
      • 1...Be5
        • 2.Rg4#
      • 1...g5
        • 2.Re3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(i);N_GUARD::QAR1(A),XB(i)
    • B(i);N_GUARD::QAR1(A)
    • P(e);N_GUARD::S(C)
  • Tries
    • Try
      • R(E);
      • Threat
        • R(I)+S(H)
      • Vars
        • K(f);P-FLIGHT::QAB(A)+R(E),DCHECK
        • P(g);SBLOCK::QAB(A)
      • Refutation
        • B(i);
    • Try
      • R(E);
      • Threat
        • R(I)+S(H)
      • Vars
        • K(f);P-FLIGHT::QAB1(A)
        • B(i);N_GUARD::QAR1(A),XB(i)
        • B(i);SBLOCK::QAB(A)
      • Refutation
        • P(g);
    • Try
      • R(E);CHECK
      • Vars
        • K(f);P-FLIGHT,XR(E)::QAB1(A)
      • Refutation
        • B(i);XR(E)
  • Actual
    • Q(A);
    • Threat
      • R(I)+S(H)
    • Vars
      • K(f);P-FLIGHT::R1(E)
      • B(i);SBLOCK::QAB(A)+R(E)
      • P(g);SBLOCK::QAB(A)+R(E)
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