MESON Chess Problem Database

Problem Display
PID: 267333 (8/8/8/2pk4/2N3K1/8/2Q2B2/1R6 w - - 0 1)

Tyunin, Aleksandr Dmitrevich

Zadachi i Etyudi, 2012

8/8/8/2pk4/2N3K1/8/2Q2B2/1R6

#2

5 + 2

SOLUTION

  • SOUND
  • Tries
    • 1.Bh4?
      • 1...Kd4
        • 2.Rd1#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc6!
    • 1.Qd1+?
      • 1...Kxc4
        • 2.Qb3#
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6!
    • 1.Qb3?
      • 1...Ke4
        • 2.Qf3#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6!
    • 1.Qd3+?
      • 1...Kc6
        • 2.Qd6#
      • 1...Ke6!
  • Keys
    • 1.Rb7!
      • 1...Kc6
        • 2.Qe4#
      • 1...Ke6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT::R(A)
        • K(b);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(B)
        • K(b);N_GUARD,S_FLIGHT::QAB1(B)
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::QAB(B)
      • K(b);N_GUARD,S_FLIGHT::QAB1(B)
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