MESON Chess Problem Database

Problem Display
PID: 110141 (1R6/3pp3/1p3R2/4k2K/1Q2p3/1p2N3/1b6/8 w - - 0 1)

Chistyakov, Aleksandr N

Kudesnik, 1993

1R6/3pp3/1p3R2/4k2K/1Q2p3/1p2N3/1b6/8

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qc3#
    • 1...Ba3
      • 2.Qc3#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bd4
      • 2.Qxe7#
    • 1...d5
      • 2.Sg4#
  • Keys
    • 1.Re8!
      • threat
        • 2.Qd6#
      • 1...Kxf6
        • 2.Qxe7#
      • 1...Ba3
        • 2.Qc3#
      • 1...d5
        • 2.Sg4#
      • 1...d6
        • 2.Qxd6#
      • 1...e6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::QAB(B)
    • B(a);N_GUARD::QAB(B),XB(a)
    • B(a);SBLOCK::QAR2(B),XP(g)
    • P(f);SBLOCK::S(A)
  • Actual
    • R(E);P_PINP(g)
    • Threat
      • QAB1(B)
    • Vars
      • K(d);N_SPINP(g),S_FLIGHT,XR(D)::QAB1(B),XP(g)
      • B(a);N_GUARD::QAB(B)
      • P(f);SBLOCK::S(A)
      • P(f);::QAB1(B),XP(f)
      • P(g);::R1(D)
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