MESON Chess Problem Database

Problem Display
PID: 238727 (1b6/2BK3p/8/4p3/N1NkP1Q1/3b1Rnr/3nP3/2q5 w - - 0 1)

Ellerman, Arnoldo

L'Italia Scacchistica, 1951

1b6/2BK3p/8/4p3/N1NkP1Q1/3b1Rnr/3nP3/2q5

#2

8 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4
      • 2.e3#
    • 1...Bxc4
      • 2.Bb6#
    • 1...Sxc4
      • 2.Rxd3#
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qd5#
      • 1...Kxe4
        • 2.Qxe5#
      • 1...Qxc4
        • 2.Qxe5#
      • 1...Bxc4
        • 2.Qxe5#
      • 1...Bxe4
        • 2.Bb6#
      • 1...Sdxe4
        • 2.Rxd3#
      • 1...Sgxe4
        • 2.e3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • Q(a);SBLOCK,XS(D)::P(A)
    • B(c);SBLOCK,XS(D)::B(G)
    • S(b);SBLOCK,XS(D)::R1(B),XB(c)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(f);P-FLIGHT,P_SPINP(g),XP(E)::QAR1(F),XP(g)
      • Q(a);SBLOCK,XS(D)::QAB1(F),XP(g)
      • B(c);SBLOCK,XS(D)::QAB1(F),XP(g)
      • B(c);SBLOCK,XP(E)::B(G)
      • S(b);SBLOCK,XP(E)::R1(B),XB(c)
      • S(d);SBLOCK,XP(E)::P(A)
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