MESON Chess Problem Database

Problem Display
PID: 258351 (8/3K4/R1RpB3/1k3q1Q/8/P7/8/1b6 w - - 0 1)

Yakimovich, Daniil

Problemas, 2022

8/3K4/R1RpB3/1k3q1Q/8/P7/8/1b6

#2

6 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Rcb6#
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qe5
      • 2.Bc4#
    • 1...Qg5
      • 2.Bc4#
    • 1...Qxh5
      • 2.Bc4#
  • Tries
    • 1.Qe2+?
      • 1...Bd3
        • 2.Qb2#
      • 1...Qd3!
    • 1.Qxf5+?
      • 1...d5
        • 2.Qxb1#
        • 2.Qxd5#
      • 1...Bxf5!
  • Keys
    • 1.Kxd6!
      • threat
        • 2.Bc4#
        • 2.Rcb6#
      • 1...Qc5+
        • 2.Qxc5#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Qe5+
        • 2.Qxe5#
      • 1...Ba2
        • 2.Rcb6#
      • 1...Bd3
        • 2.Rcb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(c);N_PINB(E)::R1(D)
    • Q(c);N_PINB(E)::QAR2(B),XQ(c)
    • Q(c);N_PINB(E)::B(E)
    • Q(c);N_PINB(E),N_SPINQ(c),XQ(B)::B(E)
  • Tries
    • Try
      • Q(B);CHECK,N_PINQ(c)
      • Vars
        • B(a);P_SPINB(a)::QAR(B)
      • Refutation
        • Q(c);N_PINB(E),P_SPINQ(c)
    • Try
      • Q(B);CHECK,N_SPINB(E),XQ(c)
      • Refutation
        • B(a);P_PINB(E),XQ(B)
  • Actual
    • K(F);N_SPINB(E),P-FLIGHT,XP(d)
    • Threat
      • DUALS(2)
    • Vars
      • Q(c);CHECK,OGATE::QAR1(B),XQ(c)
      • Q(c);CHECK,OGATE::QAR2(B),XQ(c)
      • Q(c);CHECK,OGATE::QAR(B),XQ(c)
      • B(a);::R1(D)
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