MESON Chess Problem Database

Problem Display
PID: 232955 (2B2Q2/1p3R2/k1pp4/8/2N5/1K6/8/8 w - - 0 1)

Grassano, Carlos A

Kudesnik, 2015

2B2Q2/1p3R2/k1pp4/8/2N5/1K6/8/8

#2

5 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Bxb7+?
      • 1...Ka7
        • 2.Qa8#
      • 1...Kb5!
    • 1.Qe7?
      • threat
        • 2.Qxb7#
      • 1...Ka7
        • 2.Qxb7#
      • 1...Kb5!
    • 1.Qd8?
      • threat
        • 2.Qa5#
        • 2.Qb6#
      • 1...Kb5
        • 2.Qa5#
        • 2.Qb6#
      • 1...Ka7!
  • Keys
    • 1.Rxb7!
      • 1...c5
        • 2.Qxd6#
      • 1...d5
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(D);CHECK,XP(d)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAB1(E),XP(d)
      • Vars
        • K(a);P-FLIGHT::QAR1(E),XP(d)
      • Refutation
        • K(a);N_SPINP(d),S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(C);XP(d)
    • Vars
      • P(b);OGATEB::QAR(E),XP(c)
      • P(c);OGATE::QAR(E)
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