MESON Chess Problem Database

Problem Display
PID: 16350 (2n3B1/5nr1/5Q2/N2k3q/2r3p1/3NBP2/7p/2b4K w - - 0 1)

Murphy, F

Chess, 1940

2n3B1/5nr1/5Q2/N2k3q/2r3p1/3NBP2/7p/2b4K

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Qe5#
    • 1...Qh3
      • 2.Qe5#
    • 1...Qh4
      • 2.Qe5#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qh6
      • 2.Qe5#
    • 1...Qh7
      • 2.Qe5#
    • 1...Qh8
      • 2.Qe5#
    • 1...Rc2
      • 2.Sb4#
      • 2.Sf4#
    • 1...Rc3
      • 2.Sb4#
      • 2.Sf4#
    • 1...Ra4
      • 2.Qc6#
    • 1...Rb4
      • 2.Sxb4#
      • 2.Qc6#
    • 1...Rd4
      • 2.Qc6#
    • 1...Re4
      • 2.Qc6#
    • 1...Rf4
      • 2.Sxf4#
      • 2.Qc6#
    • 1...Rc5
      • 2.Sb4#
      • 2.Sf4#
    • 1...Rc6
      • 2.Sb4#
      • 2.Sf4#
      • 2.Qxc6#
    • 1...Rc7
      • 2.Sb4#
      • 2.Sf4#
    • 1...Rg6
      • 2.Bxf7#
  • Tries
    • 1.Bxf7+?
      • 1...Qxf7
        • 2.Qe5#
      • 1...Rxf7!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qc6#
      • 1...Rxc5
        • 2.Sb4#
      • 1...Qg6
        • 2.Qe5#
      • 1...Qh6
        • 2.Qe5#
        • 2.Qf5#
      • 1...Rg6
        • 2.Bxf7#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sa7
        • 2.Qd6#
      • 1...Se7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD::QAR1(F)
    • Q(f);N_GUARD::QAR1(F),XQ(f)
    • R(c);N_GUARD::QAB1(F)
    • R(h);N_GUARD,S_CUTQ(f)::B(G),XS(g)
  • Tries
    • Try
      • B(G);CHECK,XS(g)
      • Vars
        • Q(f);XB(G)::QAR1(F)
      • Refutation
        • R(h);XB(G)
  • Actual
    • B(C);
    • Threat
      • QAB1(F)
    • Vars
      • R(c);N_GUARD,SBLOCK,XB(C)::S(B)
      • Q(f);N_GUARD::QAR1(F)
      • R(h);N_GUARD,S_CUTQ(f)::B(G),XS(g)
      • S(i);N_GUARD::QAR1(F),XS(i)
      • S(i);N_GUARD::QAR1(F)
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Developed and maintained by Brian Stephenson.
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