MESON Chess Problem Database

Problem Display
PID: 7758 (3n2b1/q3BPp1/3P1Ppb/1Q2NNkr/7p/r1p2R1P/p7/K4R2 w - - 0 1)

Garaj, Ivan

Gavriliv, Evgeni M

2nd Prize, Praca, 1993

(First published on Sat Jul 31 1993)

3n2b1/q3BPp1/3P1Ppb/1Q2NNkr/7p/r1p2R1P/p7/K4R2

#2

11 + 12

3681 FIDE Album (1992-1994) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Rxg1#
      • 2.fxg7#
    • 1...Qf2
      • 2.fxg7#
    • 1...Qe3
      • 2.fxg7#
    • 1...Qd4
      • 2.fxg7#
    • 1...Qc5
      • 2.fxg7#
    • 1...Qb6
      • 2.fxg7#
    • 1...Qb8
      • 2.Rg1#
      • 2.fxg7#
    • 1...Qa4
      • 2.fxg7#
    • 1...Qa5
      • 2.Rg1#
      • 2.fxg7#
    • 1...Qa6
      • 2.Rg1#
      • 2.fxg7#
    • 1...Qb7
      • 2.Rg1#
    • 1...Qc7
      • 2.Rg1#
    • 1...Qd7
      • 2.Rg1#
    • 1...Qa8
      • 2.Rg1#
      • 2.fxg7#
    • 1...Sb7
      • 2.fxg7#
    • 1...gxf5
      • 2.Rxf5#
  • Tries
    • 1.Sd7?
      • threat
        • 2.fxg7#
      • 1...Qxd7
        • 2.Rg1#
      • 1...gxf5
        • 2.Qxf5#
      • 1...gxf6
        • 2.Bxf6#
      • 1...Qe3
        • 2.Sxe3#
      • 1...Qd4
        • 2.Sxd4#
      • 1...Sc6!
    • 1.Se3?
      • threat
        • 2.Rg1#
      • 1...Qxe3
        • 2.fxg7#
      • 1...Qd4
        • 2.fxg7#
      • 1...Qa4
        • 2.fxg7#
      • 1...Qd7
        • 2.Sxd7#
      • 1...Ra4!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Rg1#
      • 1...Qxd4
        • 2.fxg7#
      • 1...Qd7
        • 2.Sxd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 9
  • Sets
    • Q(i);N_GUARD::B(J)+P(I),XP(j)
    • Q(i);N_GUARD::R(B)
    • S(k);S_CUTQ(i)::B(J)+P(I),XP(j)
    • P(g);OGATE,XS(G)::R1(C),XP(g)
  • Tries
    • Try
      • S(F);
      • Threat
        • B(J)+P(I),XP(j)
      • Vars
        • Q(i);N_GUARD,XS(F)::R(B)
        • P(g);OGATE,P_SPINP(g),XS(G)::QAR1(E),XP(g)
        • P(j);OGATE,P_SPINP(j),XP(I)::B(J),XP(j)
        • Q(i);N_GUARD::QAR(E)+S(G),XQ(i)
      • Refutation
        • S(k);
    • Try
      • S(G);
      • Threat
        • R(B)
      • Vars
        • Q(i);N_GUARD,XS(G)::B(J)+P(I),XP(j)
        • Q(i);N_GUARD::B(J)+P(I),XP(j)
        • Q(i);N_GUARD::QAR(E)+S(F),XQ(i)
      • Refutation
        • R(b);
  • Actual
    • S(G);
    • Threat
      • R(B)
    • Vars
      • Q(i);N_GUARD,XS(G)::B(J)+P(I),XP(j)
      • Q(i);N_GUARD::QAR(E)+S(F),XQ(i)
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