MESON Chess Problem Database

Problem Display
PID: 161601 (b7/2N5/1pn2Nn1/2rp2K1/6p1/1QB1k3/4P2R/2q5 w - - 0 1)

Airapetyan, Abel S

Problem (Zagreb), 1959

b7/2N5/1pn2Nn1/2rp2K1/6p1/1QB1k3/4P2R/2q5

#2

7 + 9

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Scxd5#
  • Keys
    • 1.Qxd5!
      • threat
        • 2.Sxg4#
      • 1...Rxd5+
        • 2.Scxd5#
      • 1...Qg1
        • 2.Bd2#
      • 1...Rc4
        • 2.Qd3#
      • 1...Sce5
        • 2.Qd4#
      • 1...Sge5
        • 2.Qe4#
      • 1...g3
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(d);N_GUARD::S(G),XP(e)
  • Actual
    • Q(C);P_SPINQ(C),XP(e)
    • Threat
      • S(F),XP(c)
    • Vars
      • R(d);CHECK,XQ(C)::S(G),XR(d)
      • Q(a);N_GUARD::B(D)
      • R(d);N_PINQ(C)::QAR1(C)
      • S(g);N_PINQ(C)::QAB1(C)
      • S(h);N_PINQ(C)::QAR1(C)
      • P(c);::S(F)
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