MESON Chess Problem Database

Problem Display
PID: 175508 (7b/4np2/8/R1BpkP2/4N1K1/8/n7/1Q6 w - - 0 1)

Rockwell, Almon Ferdinand

White, Alain Campbell

American Chess Magazine, 1899

7b/4np2/8/R1BpkP2/4N1K1/8/n7/1Q6

#2

6 + 6

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Bd6#
      • 2.Bxe7#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Bd4#
        • 2.Bd6#
        • 2.Qd4#
      • 1...dxe4
        • 2.Bxe7#
        • 2.Qd4#
        • 2.Qd6#
      • 1...d4
        • 2.Bxd4#
        • 2.Bd6#
        • 2.Bxe7#
        • 2.Qxd4#
      • 1...Sc6
        • 2.Bd6#
      • 1...Sc8
        • 2.Bd4#
        • 2.Qd4#
      • 1...Sxf5!
    • 1.Qb2+?
      • 1...Kxe4
        • 2.Qe2#
      • 1...d4
        • 2.Qxd4#
      • 1...Sc3!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sd7#
      • 1...Kxf6
        • 2.Bd4#
      • 1...Bxf6
        • 2.Qe1#
      • 1...Sxf5
        • 2.Qxf5#
      • 1...d4
        • 2.Bxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(d);::B(E)
      • Refutation
        • S(d);XP(F)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATEB,P-FLIGHT,XS(B)::QAR2(A)
        • P(b);P_SPINP(b)::QAB1(A),XP(b)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • S(B);
    • Threat
      • S(B)
    • Vars
      • K(c);S_FLIGHT,XS(B)::B(E)
      • B(f);SBLOCK,XS(B)::QAR(A)
      • S(d);OGATE,XP(F)::QAR1(A),XS(d)
      • P(b);OGATEB,SBLOCK::R(D)+B(E),XS(d)
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