MESON Chess Problem Database

Problem Display
PID: 47698 (8/8/8/8/nQpkBK2/8/8/b7 w - - 0 1)

Alekseev, Yuri Mikhailovich

Shakhmaty v SSSR, 1981

8/8/8/8/nQpkBK2/8/8/b7

#2

3 + 4

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Bc3
      • 2.Qd6#
    • 1...Sc3
      • 2.Qb6#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qe5#
      • 1...c3
        • 2.Qb4#
        • 2.Qd5#
      • 1...Sc5!
    • 1.Qe7?
      • threat
        • 2.Qe5#
      • 1...c3
        • 2.Qb4#
      • 1...Kc3!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Qe3#
      • 1...c3
        • 2.Qb4#
      • 1...Bc3
        • 2.Qd6#
      • 1...Sc3
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAR2(A)
    • S(b);N_GUARD,SBLOCK::QAB(A)
  • Tries
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • QAB1(A)
      • Refutation
        • S(b);
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • QAB1(A)
      • Vars
        • P(c);OGATEB::QAR2(A)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);N_PINP(c)
    • Threat
      • QAB1(A)
    • Vars
      • P(c);OGATEB::QAR2(A)
      • B(a);SBLOCK::QAR2(A)
      • S(b);OGATE,SBLOCK::QAB(A)
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