MESON Chess Problem Database

Problem Display
PID: 195163 (2B3K1/8/r1P5/P1NkP1Bp/3P4/1N3pn1/Q7/2RR2b1 w - - 0 1)

Sparke, Arthur M

Brisbane Courier, 1918

2B3K1/8/r1P5/P1NkP1Bp/3P4/1N3pn1/Q7/2RR2b1

#2

12 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa5
      • 2.Sxa5#
    • 1...Rxc6
      • 2.Sa1#
  • Tries
    • 1.Sd2+?
      • 1...Kxd4
        • 2.Sxf3#
      • 1...Kxc6!
    • 1.Se4?
      • threat
        • 2.Sf6#
      • 1...Kxe4
        • 2.Sc5#
      • 1...Rxc6
        • 2.Sbc5#
      • 1...Sxe4
        • 2.Sa1#
      • 1...Bxd4!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Sf6#
      • 1...Ke6
        • 2.Sb6#
      • 1...Rxc6
        • 2.Sbc5#
      • 1...Bxd4
        • 2.Sd2#
      • 1...Se4
        • 2.Sa1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);XP(F)::QAB(C)+S(D),XR(f)
    • R(f);SBLOCK,XP(J)::QAB(C)+S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT,XP(E)::R(B)+S(D),DCHECK,XP(b)
      • Refutation
        • K(d);S_FLIGHT,XP(J)
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • K(d);S_FLIGHT,XS(G)::S(D)
        • R(f);SBLOCK,XP(J)::QAB(C)+S(D)
        • S(c);SBLOCK,XS(G)::QAB(C)+S(D)
      • Refutation
        • B(a);P_SPINB(a),XP(E)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • K(d);S_FLIGHT::S(G)
      • K(d);S_FLIGHT::B(K)+S(G)
      • R(f);SBLOCK,XP(J)::QAB(C)+S(D)
      • B(a);P_SPINB(a),SBLOCK,XP(E)::QAB(C)+S(D)
      • S(c);SBLOCK::QAB(C)+S(D)
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