MESON Chess Problem Database

Problem Display
PID: 47229 (2n1K3/8/4N3/3pNb2/4k3/3pbp2/8/Q7 w - - 0 1)

Loyd, Sam

Providence Journal, 1890

2n1K3/8/4N3/3pNb2/4k3/3pbp2/8/Q7

#2

4 + 7

5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Qd4#
    • 1...Bd2
      • 2.Qd4#
    • 1...Bd4
      • 2.Qxd4#
    • 1...Bf4
      • 2.Qd4#
    • 1...Bg5
      • 2.Qd4#
    • 1...Bh6
      • 2.Qd4#
  • Keys
    • 1.Sf7!
      • threat
        • 2.Qe5#
      • 1...Sd6+
        • 2.Sxd6#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bf4
        • 2.Qd4#
      • 1...d2
        • 2.Qb1#
      • 1...f2
        • 2.Qh1#
      • 1...d4
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • B(b);N_GUARD::QAR1(A)
    • B(b);N_GUARD::QAR1(A),XB(b)
  • Actual
    • S(B);
    • Threat
      • QAR1(A)
    • Vars
      • S(g);CHECK,N_GUARD::S(B),XS(g)
      • B(b);N_GUARD::QAR1(A),XB(b)
      • B(b);N_GUARD::QAR1(A)
      • P(a);OGATEB::QAB(A)
      • P(c);OGATEB::QAB(A)
      • P(e);OGATEB::QAB(A)
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