MESON Chess Problem Database

Problem Display
PID: 32702 (4q3/2PPknPn/1r3p2/2P2Q1r/3NN2b/1B6/2K5/8 w - - 0 1)

Booth, David (Jr)

2nd Prize, Franklin Chess Club, 1914

4q3/2PPknPn/1r3p2/2P2Q1r/3NN2b/1B6/2K5/8

#2

9 + 8

14907 Good Companion Chess Problem Club 1914

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Sc6#
      • 2.Qe6#
    • 1...Rb4
      • 2.Sc6#
      • 2.Qe6#
    • 1...Rb5
      • 2.Sc6#
      • 2.Qe6#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Re6
      • 2.Qxe6#
    • 1...Rb7
      • 2.Sc6#
      • 2.Qe6#
    • 1...Rb8
      • 2.Sc6#
      • 2.Qe6#
    • 1...Sd6
      • 2.Qe6#
    • 1...Sd8
      • 2.c8S#
    • 1...Sf8
      • 2.g8S#
  • Tries
    • 1.d8Q+?
      • 1...Sxd8
        • 2.c8S#
      • 1...Qxd8!
    • 1.d8B+?
      • 1...Sxd8
        • 2.c8S#
      • 1...Qxd8!
  • Keys
    • 1.c6!
      • threat
        • 2.Qe6#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Qxd7
        • 2.Qxd7#
      • 1...Rxf5
        • 2.Sxf5#
      • 1...Sfg5
        • 2.Qc5#
      • 1...Sd8
        • 2.c8S#
      • 1...Shg5
        • 2.Qxf6#
      • 1...Sf8
        • 2.g8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(c);N_GUARD,P_PINP(E)::S(C),XR(c)
    • R(c);N_GUARD::QAR1(F),XR(c)
    • S(f);S_CUTR(c)::QAR1(F)
    • S(f);SBLOCK,S_CUTQ(h)::P=S
    • S(g);SBLOCK,S_CUTQ(h)::P=S
  • Tries
    • Try
      • P(H);CHECK
      • Vars
        • S(f);N_GUARD,SBLOCK,S_CUTQ(h),XQ(H)::P=S
      • Refutation
        • Q(h);XQ(H)
    • Try
      • P(H);CHECK
      • Vars
        • S(f);N_GUARD,SBLOCK,S_CUTQ(h),XB(H)::P=S
      • Refutation
        • Q(h);XB(H)
  • Actual
    • P(E);
    • Threat
      • QAR1(F)
    • Vars
      • R(c);CHECK,XP(E)::S(C),XR(c)
      • Q(h);OGATE,XP(H)::QAR1(F),XQ(h)
      • R(b);XQ(F)::S(C),XR(b)
      • S(f);N_GUARD,S_CUTR(b)::QAB(F)
      • S(f);SBLOCK,S_CUTQ(h)::P=S
      • S(g);N_GUARD,S_CUTB(a)::QAB1(F),XP(d)
      • S(g);SBLOCK,S_CUTQ(h)::P=S
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