MESON Chess Problem Database

Problem Display
PID: 223069 (4K3/8/3P4/7p/p6P/PBk2N2/pn2p1Q1/B3N3 w - - 0 1)

Clarke, Thomas Denton

Australasian (The), 1885

4K3/8/3P4/7p/p6P/PBk2N2/pn2p1Q1/B3N3

#2

9 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qg1?
      • threat
        • 2.Qe3#
      • 1...axb3
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kxb3!
    • 1.Qxe2?
      • threat
        • 2.Qd3#
        • 2.Qc4#
        • 2.Qxb2#
        • 2.Qc2#
        • 2.Qe3#
      • 1...axb3
        • 2.Bxb2#
        • 2.Qd3#
      • 1...Kxb3!
    • 1.Qf2?
      • threat
        • 2.Qe3#
      • 1...axb3
        • 2.Qd4#
        • 2.Qc5#
      • 1...Kxb3!
    • 1.Qg3?
      • 1...Kxb3
        • 2.Sd2#
      • 1...axb3!
    • 1.Qg4?
      • threat
        • 2.Qb4#
        • 2.Qc4#
      • 1...Kxb3
        • 2.Qb4#
      • 1...axb3
        • 2.Qc8#
        • 2.Qb4#
        • 2.Qd4#
      • 1...hxg4!
    • 1.Qg5?
      • threat
        • 2.Qe3#
      • 1...axb3
        • 2.Qc1#
        • 2.Qc5#
      • 1...Kxb3!
    • 1.Qg6?
      • threat
        • 2.Qc2#
        • 2.Qd3#
      • 1...axb3
        • 2.Qd3#
      • 1...Kxb3!
  • Keys
    • 1.Qh3!
      • 1...Kxb3
        • 2.Sd2#
      • 1...axb3
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Refutation
        • K(d);N_SPINS(b),P-FLIGHT,XB(E)
    • Try
      • Q(C);XP(c)
      • Threat
        • DUALS(5)
      • Refutation
        • K(d);N_SPINS(b),P-FLIGHT,XB(E)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Refutation
        • K(d);N_SPINS(b),P-FLIGHT,XB(E)
    • Try
      • Q(C);
      • Vars
        • K(d);N_SPINS(b),P-FLIGHT,XB(E)::QAR(C)+S(F),DCHECK
      • Refutation
        • P(e);XB(E)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);N_SPINS(b),P-FLIGHT,XB(E)::QAR1(C)
      • Refutation
        • P(f);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Refutation
        • K(d);N_SPINS(b),P-FLIGHT,XB(E)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(e);SBLOCK,XB(E)::QAR1(C)
      • Refutation
        • K(d);N_SPINS(b),P-FLIGHT,XB(E)
  • Actual
    • Q(C);
    • Vars
      • K(d);N_SPINS(b),P-FLIGHT,XB(E)::QAR(C)+S(F),DCHECK
      • P(e);SBLOCK,XB(E)::QAR(C)
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