MESON Chess Problem Database

Problem Display
PID: 42766 (KN6/p1Q1p3/2ppr3/1knq4/p1N5/Bn6/2R1R3/5Bbb w - - 0 1)

Marandiuk, Mikhail Nazarovich

1st Prize, Shakhmaty i Shashki v SSSR, 1985

KN6/p1Q1p3/2ppr3/1knq4/p1N5/Bn6/2R1R3/5Bbb

#2

8 + 12

3748 FIDE Album (1983-1985) 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Sa1
      • 2.Qa5#
    • 1...Sc1
      • 2.Qa5#
    • 1...Sd2
      • 2.Qa5#
    • 1...Sd4
      • 2.Qa5#
    • 1...Sa5
      • 2.Qxa5#
    • 1...a5
      • 2.Qb6#
    • 1...a6
      • 2.Qb6#
  • Tries
    • 1.Re3?
      • threat
        • 2.Sxd6#
      • 1...Qxc4
        • 2.Bxc4#
      • 1...Sd3
        • 2.Qb7#
      • 1...Qd3!
    • 1.Re4?
      • threat
        • 2.Sxd6#
      • 1...Qxc4
        • 2.Bxc4#
      • 1...Qd3
        • 2.Qxc6#
      • 1...Sd3!
    • 1.Qxa7?
      • threat
        • 2.Qb6#
      • 1...Sd3
        • 2.Qa6#
      • 1...Se4
        • 2.Qa6#
      • 1...Sa6
        • 2.Qxa6#
      • 1...Sb7
        • 2.Qa6#
      • 1...Sd7
        • 2.Qa6#
      • 1...Qxc4!
  • Keys
    • 1.Re5!
      • threat
        • 2.Sxd6#
      • 1...Qxc4
        • 2.Bxc4#
      • 1...dxe5
        • 2.Sd6#
      • 1...Qd3
        • 2.Qb7#
      • 1...Sd3
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • S(c);N_GUARD::QAR1(F)
    • S(c);N_GUARD::QAR1(F),XS(c)
    • P(k);N_GUARD::QAR1(F)
  • Tries
    • Try
      • R(C);
      • Threat
        • B(A)+S(E),DCHECK,XP(i)
      • Vars
        • Q(g);OGATE,P_SPINQ(g),XS(E)::B(A),XQ(g)
        • S(f);N_GUARD::QAR2(F)
      • Refutation
        • Q(g);
    • Try
      • R(C);
      • Threat
        • B(A)+S(E),DCHECK,XP(i)
      • Vars
        • Q(g);OGATE,P_SPINQ(g),XS(E)::B(A),XQ(g)
        • Q(g);N_GUARD::QAB1(F),XP(h)
      • Refutation
        • S(f);
    • Try
      • Q(F);XP(k)
      • Threat
        • QAR1(F)
      • Vars
        • S(f);N_GUARD::QAB1(F)
        • S(f);N_GUARD::QAB1(F),XS(f)
      • Refutation
        • Q(g);XS(E)
  • Actual
    • R(C);
    • Threat
      • B(A)+S(E),DCHECK,XP(i)
    • Vars
      • Q(g);OGATE,P_SPINQ(g),P_SPINS(f),XS(E)::B(A),XQ(g)
      • P(i);XR(C)::B(A)+S(E),DCHECK
      • Q(g);P_SPINS(f)::QAR2(F)
      • S(f);P_SPINQ(g)::QAB1(F),XP(h)
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