MESON Chess Problem Database

Problem Display
PID: 120678 (8/2Qn4/1pp1b3/3k4/PR1B4/1P2P3/5K2/8 w - - 0 1)

Mortensen, E

Source?, 0000

8/2Qn4/1pp1b3/3k4/PR1B4/1P2P3/5K2/8

#2

7 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Qe5#
    • 1...Se5
      • 2.Qxe5#
    • 1...Sf6
      • 2.Qe5#
    • 1...Sb8
      • 2.Qe5#
    • 1...Sf8
      • 2.Qe5#
  • Tries
    • 1.Be5?
      • threat
        • 2.Qd6#
      • 1...Kc5
        • 2.Rb5#
        • 2.Qd6#
      • 1...Sxe5!
    • 1.Rxb6?
      • threat
        • 2.Qxc6#
      • 1...Sxb6
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sb8
        • 2.Qe5#
      • 1...c5
        • 2.Qc6#
        • 2.Qb7#
      • 1...Ke4!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qd6#
      • 1...Kxc5
        • 2.Rb5#
      • 1...Sxc5
        • 2.Rd4#
      • 1...bxc5
        • 2.e4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(e);N_GUARD::QAR1(G)
    • S(e);N_GUARD::QAR1(G),XS(e)
  • Tries
    • Try
      • B(F);
      • Threat
        • QAR1(G)
      • Refutation
        • S(e);XB(F)
    • Try
      • R(E);XP(b)
      • Threat
        • QAB1(G),XP(c)
      • Vars
        • S(e);N_GUARD,XR(E)::QAR1(G)
        • S(e);N_GUARD::QAR1(G),XS(e)
        • S(e);N_GUARD::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(F);
    • Threat
      • QAR1(G)
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINP(c),XB(F)::R1(E)
      • S(e);SBLOCK,XB(F)::R1(E)
      • P(b);SBLOCK,XB(F)::P(C)
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