MESON Chess Problem Database

Problem Display
PID: 47379 (4Q3/3K4/7p/4b1n1/1N1kN1P1/B1R1np2/2P4q/1B2R3 w - - 0 1)

Howard, David M

Problem Observer, 2003

4Q3/3K4/7p/4b1n1/1N1kN1P1/B1R1np2/2P4q/1B2R3

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Rc4#
    • 1...Sc4
      • 2.Rd3#
    • 1...Sd5
      • 2.Sc6#
  • Tries
    • 1.Rc4+?
      • 1...Sxc4
        • 2.c3#
      • 1...Kxc4!
  • Keys
    • 1.Rc5!
      • threat
        • 2.c3#
      • 1...Kxe4
        • 2.Rc4#
      • 1...Qxc2
        • 2.Qxe5#
      • 1...Sxc2
        • 2.Bb2#
      • 1...Sxe4
        • 2.Sc6#
      • 1...Qd2
        • 2.Qxe5#
      • 1...Sd1
        • 2.Sc6#
      • 1...Sd5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(d);P-FLIGHT,P_SPINB(e),P_SPINS(b),XS(G)::R(E)
    • S(b);SBLOCK::R1(E)
    • S(b);SBLOCK::S(F)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • S(b);SBLOCK,XR(E)::P(C)
      • Refutation
        • K(d);P-FLIGHT,XR(E)
  • Actual
    • R(E);
    • Threat
      • P(C)
    • Vars
      • K(d);P-FLIGHT,P_SPINB(e),P_SPINS(b),XS(G)::R(E)
      • Q(a);N_GUARD,XP(C)::QAB1(J),XB(e)
      • S(b);XP(C)::B(D)
      • S(f);SBLOCK,XS(G)::S(F)
      • Q(a);N_GUARD::QAB1(J),XB(e)
      • S(b);::S(F)
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