MESON Chess Problem Database

Problem Display
PID: 245353 (6b1/1Q1RNB2/K1p1r3/p1p4r/pPk5/3N4/1BP2n1b/8 w - - 0 1)

Onkoud, Abdelaziz

Rochade Europa, 2013

6b1/1Q1RNB2/K1p1r3/p1p4r/pPk5/3N4/1BP2n1b/8

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...cxb4
      • 2.Rd4#
  • Tries
    • 1.Qxc6?
      • threat
        • 2.Rd4#
      • 1...Rh4
        • 2.Qxe6#
      • 1...Be5
        • 2.Qxe6#
      • 1...Bd6
        • 2.Qb5#
      • 1...Rd5!
  • Keys
    • 1.Sxc6!
      • threat
        • 2.Qb5#
      • 1...cxb4
        • 2.Rd4#
      • 1...Bd6
        • 2.Sxa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(f);N_GUARD,XP(D)::R1(G)
  • Tries
    • Try
      • Q(F);P_PINP(f),P_SPINQ(F),XP(h)
      • Threat
        • R1(G)
      • Vars
        • R(g);N_GUARD::QAB(F),XR(i)
        • B(b);S_CUTR(g)::QAB(F),XR(i)
        • B(b);N_PINQ(F)::QAB1(F)
      • Refutation
        • R(g);N_SPINR(i)
  • Actual
    • S(H);P_SPINS(H),XP(h)
    • Threat
      • QAB1(F)
    • Vars
      • P(f);N_GUARD,XP(D)::R1(G)
      • B(b);N_PINS(H)::S(H),XP(e)
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