MESON Chess Problem Database

Problem Display
PID: 106118 (3r4/5p2/b1Nbp1Q1/2p5/2r2R1P/2N1kn2/1R6/7K w - - 0 1)

Clarke, Thomas Denton

Melbourne Leader, 1884

3r4/5p2/b1Nbp1Q1/2p5/2r2R1P/2N1kn2/1R6/7K

#2

7 + 9

15 British Chess Magazine 1896
6490 yacpdb 2009
136 Problem Observer 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc3
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Rxf4
      • 2.Sd1#
    • 1...Bxf4
      • 2.Re2#
    • 1...Sd4
      • 2.Qe4#
    • 1...e5
      • 2.Sd5#
  • Tries
    • 1.Re4+?
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Kd3!
    • 1.Qd3+?
      • 1...Kxd3
        • 2.Rxf3#
      • 1...Kxf4!
  • Keys
    • 1.Rf2!
      • threat
        • 2.R4xf3#
      • 1...Kxf2
        • 2.Qg1#
      • 1...Kxf4
        • 2.Qg5#
      • 1...Rxf4
        • 2.Sd1#
      • 1...Bxf4
        • 2.Re2#
      • 1...Sxh4
        • 2.Sd1#
      • 1...Se1
        • 2.Sd1#
      • 1...Sg1
        • 2.Sd1#
      • 1...Sd2
        • 2.Sd1#
      • 1...Sh2
        • 2.Sd1#
      • 1...Sd4
        • 2.Sd1#
        • 2.Qe4#
      • 1...Se5
        • 2.Sd1#
      • 1...Sg5
        • 2.Sd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD,XS(C)::QAR1(G)
    • R(c);N_GUARD::QAR1(G),XR(c)
    • R(c);SBLOCK,XR(D)::S(C)
    • B(f);SBLOCK,XR(D)::R1(B)
    • S(b);S_CUTR(c)::QAR1(G)
    • P(g);N_GUARD::S(C)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • R(c);OGATE,XR(D)::QAR1(G),XR(c)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);P-FLIGHT,XQ(G)::R(D),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(D)
  • Actual
    • R(B);
    • Threat
      • R1(D),XS(b)
    • Vars
      • K(a);OGATEB,P_SPINS(b),S_FLIGHT,XR(B)::QAB1(G)
      • K(a);OGATEB,P_SPINS(b),S_FLIGHT,XR(D)::QAB1(G)
      • R(c);SBLOCK,XR(D)::S(C)
      • B(f);SBLOCK,XR(D)::R1(B)
      • S(b);XP(E)::S(C)
      • S(b);::S(C)
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