MESON Chess Problem Database

Problem Display
PID: 137485 (b2Q3B/p5r1/2r2R1b/8/1N1P4/N1k5/K1P1R3/8 w - - 0 1)

Ellerman, Arnoldo

L'Italia Scacchistica, 1936

b2Q3B/p5r1/2r2R1b/8/1N1P4/N1k5/K1P1R3/8

#2

9 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc6+?
      • 1...Kxb4
        • 2.Rc4#
      • 1...Bxc6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Sxc6#
      • 1...Kxd4
        • 2.Qe5#
      • 1...Rxf6
        • 2.Sc6#
        • 2.Qc5#
      • 1...Rc4
        • 2.Sb5#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Ra6
        • 2.Qc5#
      • 1...Rb6
        • 2.Qc5#
      • 1...Rd6
        • 2.Sc6#
        • 2.Qc5#
      • 1...Re6
        • 2.Sc6#
        • 2.Qc5#
      • 1...Rcc7
        • 2.Sc6#
      • 1...Rc8
        • 2.Sc6#
      • 1...Rg5
        • 2.Rf3#
      • 1...Rb7
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(G);CHECK,XR(b)
      • Vars
        • K(a);S_FLIGHT,XS(E)::R1(G)
      • Refutation
        • B(f);XR(G)
  • Actual
    • Q(H);
    • Threat
      • QAB(H)+S(E),XR(b)
    • Vars
      • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(H)
      • R(b);SBLOCK::S(D)
      • R(b);N_GUARD::QAR2(H),XR(b)
      • R(b);N_GUARD::QAR2(H)
      • R(b);::QAB(H)+S(E)
      • R(e);S_CUTB(c)::R(G)
      • R(e);S_CUTB(f)::R(G),XR(b)
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