MESON Chess Problem Database

Problem Display
PID: 239915 (4b3/B2N2K1/4PP1Q/3p1B2/N1pP1n2/3rkPR1/3b2R1/3q4 w - - 0 1)

Ellerman, Arnoldo

Sinfonie Scacchistiche, 1970

4b3/B2N2K1/4PP1Q/3p1B2/N1pP1n2/3rkPR1/3b2R1/3q4

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sdb6?
      • threat
        • 2.Sxd5#
      • 1...Kxd4
        • 2.Sd7#
      • 1...Bc6!
    • 1.Bb8?
      • threat
        • 2.Qxf4#
      • 1...Kxd4
        • 2.Ba7#
      • 1...Rxd4!
    • 1.Rg4?
      • threat
        • 2.Qxf4#
      • 1...Kxf3
        • 2.R4g3#
      • 1...Qxf3!
  • Keys
    • 1.Sab6!
      • threat
        • 2.Sxd5#
      • 1...Kxd4
        • 2.Sa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(K);
      • Threat
        • S(K),XP(g)
      • Vars
        • K(d);N_SPINS(f),S_FLIGHT,XP(E)::B(J)+S(K)
      • Refutation
        • B(h);
    • Try
      • B(J);
      • Threat
        • QAB1(I),XS(f)
      • Vars
        • K(d);N_SPINS(f),OGATEB,S_FLIGHT,XP(E)::B(J)
      • Refutation
        • R(c);XP(E)
    • Try
      • R(C);
      • Threat
        • QAB1(I),XS(f)
      • Vars
        • K(d);N_SPINS(f),OGATEB,P-FLIGHT,XP(B)::R1(C)
      • Refutation
        • Q(a);XP(B)
  • Actual
    • S(D);
    • Threat
      • S(D),XP(g)
    • Vars
      • K(d);N_SPINS(f),S_FLIGHT,XP(E)::B(J)+S(D)
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