MESON Chess Problem Database

Problem Display
PID: 15178 (2N4Q/1KBk4/1pn3r1/1B1P4/b2R3b/8/5q2/8 w - - 0 1)

Syzonenko, Viktor N

2nd Prize, Thema Danicum, 1980

2N4Q/1KBk4/1pn3r1/1B1P4/b2R3b/8/5q2/8

#2

7 + 7

3752 FIDE Album (1980-1982) 1988

SOLUTION

  • SOUND
  • Sets
    • 1...Rg5
      • 2.Qd8#
    • 1...Re6
      • 2.dxc6#
    • 1...Rf6
      • 2.Qd8#
    • 1...Bg3
      • 2.Qd8#
    • 1...Be7
      • 2.Sxb6#
    • 1...Bd8
      • 2.Qxd8#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Sxb6#
        • 2.dxc6#
      • 1...Re6
        • 2.Qxe6#
      • 1...Be7
        • 2.Qxe7#
      • 1...Qxd4!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qe8#
      • 1...Qf7
        • 2.Sxb6#
      • 1...Qf8
        • 2.Sxb6#
      • 1...Re6
        • 2.dxe6#
      • 1...Rg8
        • 2.dxc6#
      • 1...Be7
        • 2.Rxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(f);S_CUTB(c)::QAR1(G)
    • R(f);SBLOCK::R(A)+P(C)DCHECK,XS(e)
    • B(c);N_GUARD::QAR1(G)
    • B(c);SBLOCK::S(F),XP(d)
    • B(c);N_GUARD::QAR1(G),XB(c)
  • Tries
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);N_GUARD::QAB1(G),XR(f)
        • B(c);N_GUARD::QAR1(G),XB(c)
      • Refutation
        • Q(a);XR(A)
  • Actual
    • R(A);
    • Threat
      • QAB1(G)
    • Vars
      • Q(a);N_GUARD::S(F),XP(d)
      • R(f);OGATE::P(C),XR(f)
      • R(f);N_GUARD::P(C),XS(e)
      • B(c);N_GUARD::R1(A),XB(c)
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