MESON Chess Problem Database

Problem Display
PID: 253112 (8/1p3NK1/2N5/rq1p1k1B/3R1p2/1Q1b4/3Pn3/8 w - - 0 1)

Joseph, Samuel M

English Mechanic and World of Science, 1888

(First published on Fri Apr 6 1888)

8/1p3NK1/2N5/rq1p1k1B/3R1p2/1Q1b4/3Pn3/8

#2

7 + 8

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qh3#
    • 1...Bc2
      • 2.Qh3#
    • 1...Bc4
      • 2.Qh3#
    • 1...Be4
      • 2.Qh3#
    • 1...f3
      • 2.Bg4#
  • Tries
    • 1.Rxd5+?
      • 1...Ke4
        • 2.Sg5#
        • 2.Sd6#
      • 1...Ke6
        • 2.Sg5#
        • 2.Sfd8#
      • 1...Qxd5!
    • 1.Qxd3+?
      • 1...Ke6
        • 2.Bg4#
        • 2.Qh3#
      • 1...Qxd3!
  • Keys
    • 1.Re4!
      • threat
        • 2.Re5#
      • 1...Kxe4
        • 2.Sd6#
      • 1...Bxe4
        • 2.Qh3#
      • 1...dxe4
        • 2.Se7#
      • 1...f3
        • 2.Bg6#
      • 1...d4
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • B(b);OGATE::QAB(B)
    • P(c);::B(D)
  • Tries
    • Try
      • R(C);CHECK,XP(f)
      • Refutation
        • Q(e);XR(C)
    • Try
      • Q(B);CHECK,XB(b)
      • Refutation
        • Q(e);XQ(B)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • K(g);N_GUARD,S_FLIGHT,XR(C)::S(F)
      • B(b);OGATE,SBLOCK,XR(C)::QAB(B)
      • P(f);SBLOCK,XR(C)::S(E)
      • P(c);::B(D)
      • P(f);OGATE::QAB1(B)
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