MESON Chess Problem Database

Problem Display
PID: 156812 (1R1Q1R2/8/8/1n3n2/8/3K4/8/3k4 w - - 0 1)

Daniel, Arthur William

British Chess Magazine, 1905

1R1Q1R2/8/8/1n3n2/8/3K4/8/3k4

#2

4 + 3

5454 Near Snap 2016
3713 Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sbd4
      • 2.Rb1#
    • 1...Sbd6
      • 2.Rb1#
    • 1...Sa7
      • 2.Rb1#
    • 1...Sc7
      • 2.Rb1#
    • 1...Sfd4
      • 2.Rf1#
    • 1...Sh4
      • 2.Rf1#
    • 1...Sfd6
      • 2.Rf1#
    • 1...Sh6
      • 2.Rf1#
    • 1...Se7
      • 2.Rf1#
    • 1...Sg7
      • 2.Rf1#
  • Tries
    • 1.Qa5?
      • threat
        • 2.Qd2#
        • 2.Qa1#
      • 1...Kc1
        • 2.Qa1#
      • 1...Sa3
        • 2.Qd2#
      • 1...Sc3!
    • 1.Qg5?
      • threat
        • 2.Qd2#
        • 2.Qg1#
      • 1...Ke1
        • 2.Qg1#
      • 1...Sg3
        • 2.Qd2#
      • 1...Se3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qa1#
        • 2.Qg1#
      • 1...Kc1
        • 2.Qa1#
      • 1...Ke1
        • 2.Qg1#
      • 1...Sbxd4
        • 2.Rb1#
      • 1...Sfxd4
        • 2.Rf1#
      • 1...Sa3
        • 2.Qg1#
      • 1...Sc3
        • 2.Qg1#
      • 1...Se3
        • 2.Qa1#
      • 1...Sg3
        • 2.Qa1#

This anticipates 9794(1910), 205554(1925)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • S(b);OGATE::R(B)
    • S(c);OGATE::R(D)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • S(b);::QAR1(C)
      • Refutation
        • S(b);
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR2(C)
        • S(c);::QAR1(C)
      • Refutation
        • S(c);
  • Actual
    • Q(C);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • S(b);OGATE,XQ(C)::R(B)
      • S(c);OGATE,XQ(C)::R(D)
      • S(b);::QAR(C)
      • S(c);::QAR(C)
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