MESON Chess Problem Database

Problem Display
PID: 174825 (Q4b2/3pk3/6Pp/KRR3rN/3N3B/2nn4/8/8 w - - 0 1)

Barth, Michael

Freie Presse, 1996

Q4b2/3pk3/6Pp/KRR3rN/3N3B/2nn4/8/8

#2

8 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qxf8#
    • 1...d6
      • 2.Rb7#
      • 2.Rc7#
  • Tries
    • 1.Bxg5+?
      • 1...Kd6
        • 2.Qa6#
        • 2.Qb8#
        • 2.Qxf8#
      • 1...hxg5!
    • 1.Re5+?
      • 1...Kd6
        • 2.Qb8#
      • 1...Sxe5!
    • 1.Rc6?
      • threat
        • 2.Sf5#
      • 1...d5
        • 2.Rb7#
      • 1...d6
        • 2.Rc7#
      • 1...dxc6!
    • 1.Qd8+?
      • 1...Kd6
        • 2.Rc6#
        • 2.Qf6#
        • 2.Qxf8#
      • 1...Kxd8!
    • 1.Qe8+?
      • 1...Kd6
        • 2.Qxf8#
      • 1...Kxe8!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Sf5#
      • 1...d5
        • 2.Rc7#
      • 1...d6
        • 2.Rb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(f);N_SPINR(c),S_FLIGHT::QAB(H),XB(g)
  • Tries
    • Try
      • B(B);CHECK,XR(c)
      • Refutation
        • P(d);XB(B)
    • Try
      • R(E);CHECK
      • Vars
        • K(f);N_SPINR(c),S_FLIGHT::QAB(H)
      • Refutation
        • S(b);XR(E)
    • Try
      • R(E);P_SPINR(D)
      • Threat
        • S(A)
      • Vars
        • P(e);N_PINR(D)::R(D)
        • P(e);OGATEB,SBLOCK::R(E)
      • Refutation
        • P(e);XR(E)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(f);S_FLIGHT,XQ(H)
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);N_SPINR(c),S_FLIGHT::QAB(H),XB(g)
      • Refutation
        • K(f);N_SPINR(c),P-FLIGHT,XQ(H)
  • Actual
    • R(D);P_SPINR(E)
    • Threat
      • S(A)
    • Vars
      • P(e);N_PINR(E)::R(E)
      • P(e);OGATEB,SBLOCK::R(D)
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