MESON Chess Problem Database

Problem Display
PID: 189556 (2qb4/3rp3/n5QK/2NkP2R/3N4/1P6/2P5/6Bn w - - 0 1)

Daniel, Arthur William

2nd Prize, Western Daily Mercury, 1911

2qb4/3rp3/n5QK/2NkP2R/3N4/1P6/2P5/6Bn

#2

9 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Qg2#
    • 1...Qc6
      • 2.Qxc6#
    • 1...Qb8
      • 2.Qc6#
    • 1...Rd6
      • 2.e6#
    • 1...Bc7
      • 2.Qc6#
    • 1...Sxc5
      • 2.c4#
    • 1...Sc7
      • 2.Qc6#
  • Tries
    • 1.Qd6+?
      • 1...Rxd6+
        • 2.e6#
      • 1...exd6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qc4#
      • 1...Qc6+
        • 2.Sde6#
      • 1...Rd6+
        • 2.e6#
      • 1...Kxc5
        • 2.Qb5#
      • 1...Qxc5
        • 2.Qf3#
      • 1...Sxc5
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(f);SBLOCK,XS(E)::QAB(H)
    • Q(f);N_GUARD,P_PINQ(H)::QAB1(H),XQ(f)
    • Q(f);N_GUARD::QAB1(H)
    • R(d);P_PINQ(H),SBLOCK::R(G)+P(F)
    • B(g);S_CUTQ(f)::QAB1(H)
    • S(c);SBLOCK,XS(E)::P(B)
    • S(c);S_CUTQ(f)::QAB1(H)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • R(d);CHECK,SBLOCK,XQ(H)::R(G)+P(F)
      • Refutation
        • P(e);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • Q(f);CHECK,SBLOCK::QAR(H)+S(D)
      • R(d);CHECK,SBLOCK::R(G)+P(F)
      • K(b);OGATEB,P-FLIGHT,XS(E)::QAR1(H)
      • Q(f);SBLOCK,XS(E)::QAB(H)
      • S(c);SBLOCK,XS(E)::P(B)
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Developed and maintained by Brian Stephenson.
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