MESON Chess Problem Database

Problem Display
PID: 269757 (5NR1/RbB2k1P/3P1N2/K1p1P2r/8/pqr5/B2Q4/4b3 w - - 0 1)

Chicco, Adriano

2nd Prize, La Domenica dei Giuochi, 1933

5NR1/RbB2k1P/3P1N2/K1p1P2r/8/pqr5/B2Q4/4b3

#2

11 + 8

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Bxe6#
    • 1...Rf5
      • 2.h8S#
    • 1...Rg5
      • 2.h8S#
  • Tries
    • 1.Rxb7?
      • threat
        • 2.Bb6#
        • 2.Bb8#
        • 2.Bd8#
      • 1...Rc4
        • 2.Bb6#
      • 1...c4
        • 2.Bb6#
        • 2.Qd5#
      • 1...Rxe5!
  • Keys
    • 1.Bd8!
      • threat
        • 2.Rxb7#
      • 1...Rxe5
        • 2.h8S#
      • 1...Rc4
        • 2.e6#
      • 1...c4
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(c);OGATE::B(A),XQ(c)
    • R(f);N_GUARD::P=S
  • Tries
    • Try
      • R(G);XB(g)
      • Threat
        • DUALS(3)
      • Vars
        • R(d);N_SPINQ(c),P_PINQ(B)::R(G)+B(H)
      • Refutation
        • R(f);XP(D)
  • Actual
    • B(H);P_PINB(g)
    • Threat
      • R(G),XB(g)
    • Vars
      • R(f);N_GUARD,XP(D)::P=S
      • R(d);N_SPINQ(c),P_PINQ(B),S_CUTQ(c)::P(D)
      • P(e);N_SPINQ(c),P_PINP(D),S_CUTQ(c)::QAB(B)
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