MESON Chess Problem Database

Problem Display
PID: 31394 (Q7/1n1N2K1/8/1P1p4/4kpB1/3p4/3P2R1/8 w - - 0 1)

Jacobs, Herbert

Winter-Wood, Edward John

Mirror of American Sports, 1884

(First published on Sat Apr 26 1884)

Q7/1n1N2K1/8/1P1p4/4kpB1/3p4/3P2R1/8

#2

7 + 5

3392 Chess Souvenirs 1886
15254 EJWW Scrapbook 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qa4#
    • 1...d4
      • 2.Qxb7#
  • Tries
    • 1.Re2+?
      • 1...Kd4
        • 2.Qa4#
      • 1...dxe2!
    • 1.Qa1?
      • threat
        • 2.Sf6#
        • 2.Qe5#
      • 1...f3
        • 2.Qe5#
      • 1...d4!
    • 1.Qb8?
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Qxf4#
      • 1...Sd6!
  • Keys
    • 1.Be6!
      • 1...Kf3
        • 2.Bxd5#
      • 1...Kd4
        • 2.Qa4#
      • 1...Sa5
        • 2.Qxd5#
      • 1...Sc5
        • 2.Qxd5#
      • 1...Sd6
        • 2.Qxd5#
      • 1...Sd8
        • 2.Qxd5#
      • 1...f3
        • 2.Rg4#
      • 1...d4
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR(G)
    • P(d);OGATEB,P_SPINS(e),SBLOCK::QAB(G),XS(e)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(G)
      • Refutation
        • P(a);XR(B)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(G)
      • Refutation
        • P(d);
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Vars
        • K(b);P-FLIGHT::QAR2(G),XP(c)
      • Refutation
        • S(e);
  • Actual
    • B(C);
    • Vars
      • K(b);S_FLIGHT::B(C),XP(d)
      • K(b);P-FLIGHT::QAR(G)
      • S(e);OGATE,P_SPINP(d)::QAB1(G),XP(d)
      • P(c);OGATEB,SBLOCK::R(B)
      • P(d);OGATEB,P_SPINS(e),SBLOCK::QAB(G),XS(e)
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