MESON Chess Problem Database

Problem Display
PID: 199441 (2RBR3/3n4/N1PkP3/3b4/1pp1pK2/Q7/n7/8 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Phenix, 1993

2RBR3/3n4/N1PkP3/3b4/1pp1pK2/Q7/n7/8

#2

8 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb4+?
      • 1...Sc5
        • 2.Qxc5#
        • 2.Qb8#
      • 1...Sxb4!
    • 1.Qh3?
      • threat
        • 2.Be7#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Bxc6!
    • 1.Qa4?
      • threat
        • 2.Bc7#
      • 1...Bxc6
        • 2.Qxc6#
      • 1...Bxe6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qc7#
      • 1...Bxc6
        • 2.Bc7#
      • 1...Bxe6
        • 2.Be7#
      • 1...Sb6
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK,XP(b)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • B(G)
      • Vars
        • B(e);OGATE,XP(E)::QAR1(A),XB(e)
      • Refutation
        • B(e);XP(D)
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • B(G)
      • Vars
        • B(e);OGATE,XP(D)::QAR1(A),XB(e)
      • Refutation
        • B(e);XP(E)
  • Actual
    • Q(A);N_PINP(b)
    • Threat
      • QAB1(A)
    • Vars
      • B(e);SBLOCK,XP(D)::B(G)
      • B(e);SBLOCK,XP(E)::B(G)
      • S(g);N_GUARD::QAB1(A)
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