MESON Chess Problem Database

Problem Display
PID: 137419 (b2r2Q1/8/8/P1kNP1N1/B1p2p2/K1BP3q/3prb2/8 w - - 0 1)

Ellerman, Arnoldo

1st HM., British Chess Magazine, 1951

b2r2Q1/8/8/P1kNP1N1/B1p2p2/K1BP3q/3prb2/8

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.d4#
    • 1...Re4
      • 2.Sxe4#
    • 1...Be1
      • 2.d4#
    • 1...Be3
      • 2.Se4#
    • 1...Bg3
      • 2.d4#
    • 1...Bd4
      • 2.Bb4#
    • 1...Bh4
      • 2.d4#
  • Keys
    • 1.Se3!
      • threat
        • 2.Qxc4#
      • 1...Rxg8
        • 2.d4#
      • 1...cxd3
        • 2.Qc4#
      • 1...Qe6
        • 2.Sxe6#
      • 1...Rd4
        • 2.Bb4#
      • 1...Rd5
        • 2.Se4#
      • 1...Bd5
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • R(b);S_CUTB(c)::P(C)
    • R(b);N_GUARD::S(H),XR(b)
    • B(c);N_GUARD::P(C)
    • B(c);S_CUTR(b)::S(H)
    • B(c);SBLOCK::B(B)
  • Actual
    • S(F);
    • Threat
      • QAR1(I),XP(e)
    • Vars
      • R(i);N_GUARD,XQ(I)::P(C)
      • P(e);XP(C)::QAR1(I)
      • Q(d);N_GUARD::S(H),XQ(d)
      • R(i);SBLOCK::B(B)
      • R(i);S_CUTB(h)::S(H)
      • B(h);S_CUTR(i)::P(C)
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