MESON Chess Problem Database

Problem Display
PID: 189458 (B7/4K3/p1P5/p2k4/N7/1n2Pn2/2P1QNP1/8 w - - 0 1)

Daniel, Arthur William

Reading Observer, 1911

B7/4K3/p1P5/p2k4/N7/1n2Pn2/2P1QNP1/8

#2

9 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qxf3+?
      • 1...Ke5
        • 2.Sd3#
        • 2.Sg4#
        • 2.Qe4#
        • 2.Qh5#
      • 1...Kc4!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qe6#
        • 2.Qe4#
      • 1...Kxc4!
    • 1.Qb5+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...axb5!
  • Keys
    • 1.Sg4!
      • threat
        • 2.c7#
      • 1...Ke4
        • 2.Qd3#
        • 2.Qxf3#
      • 1...Sbd4
        • 2.e4#
      • 1...Sc5
        • 2.Sc3#
      • 1...Sfd4
        • 2.e4#
      • 1...Se5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);CHECK,XS(b)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(d);S_FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR1(B),XS(a)
      • Refutation
        • P(e);XQ(B)
  • Actual
    • S(C);
    • Threat
      • B(I)+P(G)
    • Vars
      • S(a);SBLOCK::P(E)
      • S(a);SBLOCK::S(F)
      • S(b);SBLOCK::P(E)
      • S(b);SBLOCK::S(C)
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