MESON Chess Problem Database

Problem Display
PID: 103765 (8/5b2/7R/kBqQ4/8/1K6/8/8 w - - 0 1)

Shakhnazaryan, Albert Serapionovic

Kertsensky Rabotsin, 1991

8/5b2/7R/kBqQ4/8/1K6/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qg1
      • 2.Ra6#
    • 1...Qf2
      • 2.Ra6#
    • 1...Qd4
      • 2.Ra6#
    • 1...Qe7
      • 2.Ra6#
    • 1...Qf8
      • 2.Ra6#
    • 1...Qc1
      • 2.Ra6#
    • 1...Qc7
      • 2.Ra6#
  • Keys
    • 1.Bc4!
      • threat
        • 2.Ra6#
        • 2.Qxc5#
      • 1...Qb5+
        • 2.Qxb5#
      • 1...Qxd5
        • 2.Ra6#
      • 1...Bxd5
        • 2.Ra6#
      • 1...Be6
        • 2.Qxc5#
      • 1...Bg6
        • 2.Qxc5#
      • 1...Be8
        • 2.Ra6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • Q(b);::R1(D)
  • Actual
    • B(B);N_SPINQ(C),P_PINQ(b)
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);CHECK,OGATE::QAR1(C),XQ(b)
      • Q(b);N_SPINQ(b),P_PINB(B),XQ(C)::R1(D)
      • B(c);N_SPINQ(b),P_PINB(B),XQ(C)::R1(D)
      • B(c);::QAR2(C),XQ(b)
      • B(c);::R1(D)
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