MESON Chess Problem Database

Problem Display
PID: 57139 (q1Bb2Rn/8/2pPN2P/rr3k2/pp5p/8/1Q3N2/K3R3 w - - 0 1)

Sparke, Arthur M

2nd HM., Brisbane Courier, 1917

q1Bb2Rn/8/2pPN2P/rr3k2/pp5p/8/1Q3N2/K3R3

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Rxg5#
    • 1...Bb6
      • 2.Rg5#
    • 1...Bc7
      • 2.Rg5#
    • 1...c5
      • 2.Qe5#
  • Tries
    • 1.Sd3?
      • threat
        • 2.Qf2#
      • 1...Bg5
        • 2.Rxg5#
      • 1...Qa7
        • 2.Sc7#
      • 1...Bb6
        • 2.Rg5#
      • 1...Bf6
        • 2.Sd4#
      • 1...c5
        • 2.Qe5#
      • 1...Sg6!
    • 1.Sg4?
      • threat
        • 2.Qb1#
        • 2.Qc2#
        • 2.Qf2#
      • 1...Bg5
        • 2.Rxg5#
      • 1...Qa7
        • 2.Qb1#
        • 2.Qc2#
      • 1...Rc5
        • 2.Qf2#
      • 1...Rd5
        • 2.Qf2#
      • 1...Re5
        • 2.Qf2#
      • 1...Bb6
        • 2.Rg5#
        • 2.Qf6#
        • 2.Qb1#
        • 2.Qc2#
      • 1...Bf6
        • 2.Qxf6#
      • 1...b3
        • 2.Qb1#
        • 2.Qf2#
      • 1...c5
        • 2.Re5#
        • 2.Qe5#
      • 1...Sg6!
    • 1.Sd4+?
      • 1...Kf4
        • 2.Sd3#
        • 2.Sh3#
        • 2.Re4#
        • 2.Rg4#
        • 2.Qc1#
        • 2.Qd2#
      • 1...Kf6!
    • 1.Sc5+?
      • 1...Qxc8
        • 2.Qe5#
      • 1...Kf4!
    • 1.Rg4?
      • threat
        • 2.Sg7#
      • 1...Bg5
        • 2.Rxg5#
      • 1...Re5!
  • Keys
    • 1.Sh3!
      • threat
        • 2.Qf2#
      • 1...Bg5
        • 2.Rxg5#
      • 1...Sg6
        • 2.Sg7#
      • 1...Qa7
        • 2.Sc7#
      • 1...Bb6
        • 2.Rg5#
      • 1...Bf6
        • 2.Sd4#
      • 1...c5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD::R1(I),XB(i)
    • B(i);N_GUARD::R1(I)
    • P(g);S_CUTR(e)::QAR1(C)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR(C)
      • Vars
        • B(i);N_GUARD::R1(I),XB(i)
        • Q(h);N_GUARD::B(H)+S(F)
        • B(i);N_GUARD::R1(I)
        • B(i);P_PINQ(C),SBLOCK::B(H)+S(F),DCHECK
        • P(g);S_CUTR(e)::QAR1(C)
      • Refutation
        • S(j);
    • Try
      • S(D);
      • Threat
        • DUALS(3)
      • Vars
        • B(i);N_GUARD::R1(I),XB(i)
        • R(e);::QAR(C)
        • B(i);N_GUARD,P_PINQ(C)::QAR1(C),XB(i)
      • Refutation
        • S(j);
    • Try
      • S(F);CHECK
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • Q(h);XB(H)::QAR1(C)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • R(I);
      • Threat
        • B(H)+S(F),DCHECK
      • Vars
        • B(i);N_GUARD::R1(I),XB(i)
      • Refutation
        • R(e);
  • Actual
    • S(D);
    • Threat
      • QAR(C)
    • Vars
      • B(i);N_GUARD::R1(I),XB(i)
      • S(j);SBLOCK::B(H)+S(F),DCHECK
      • Q(h);N_GUARD::B(H)+S(F)
      • B(i);N_GUARD::R1(I)
      • B(i);P_PINQ(C),SBLOCK::B(H)+S(F),DCHECK
      • P(g);S_CUTR(e)::QAR1(C)
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