MESON Chess Problem Database

Problem Display
PID: 261686 (8/5Q2/1p2r3/4P1p1/1ppk4/4N3/2P2B2/1K6 w - - 0 1)

Juricek, Stanislav

Sachove umeni (Ceskoslovensky sach), 2020

8/5Q2/1p2r3/4P1p1/1ppk4/4N3/2P2B2/1K6

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe5
      • 2.Qxc4#
  • Tries
    • 1.Qf4+?
      • 1...Kc3
        • 2.Sd1#
        • 2.Sd5#
        • 2.Be1#
      • 1...Kc5
        • 2.Qxc4#
      • 1...gxf4!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Sg4#
      • 1...Kc3
        • 2.Sf1#
      • 1...Kc5
        • 2.Qd5#
      • 1...Kxe5
        • 2.Sxc4#
      • 1...Rxe5
        • 2.Sf5#
      • 1...c3
        • 2.Qd5#
      • 1...g4
        • 2.Sxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(f);OGATE,SBLOCK,XP(E)::QAR1(F),XP(b)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAR1(F),XP(b)
      • Refutation
        • P(d);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • B(C)+S(D)
    • Vars
      • K(c);N_GUARD,S_FLIGHT::QAR(F)+S(D)
      • K(c);N_GUARD,S_FLIGHT::QAR1(F)
      • K(c);N_GUARD,S_FLIGHT,XP(E)::S(D),XP(b)
      • R(f);SBLOCK,XP(E)::B(C)+S(D),DCHECK
      • P(b);SBLOCK::QAR1(F)
      • P(d);::B(C)+S(D),XP(d)
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