MESON Chess Problem Database

Problem Display
PID: 244176 (Q7/Bp2pq2/4P3/R2PP2r/3pk1B1/3N4/2K2pN1/8 w - - 0 1)

Brabec, Juraj

Sachove umeni (Ceskoslovensky sach), 1990

Q7/Bp2pq2/4P3/R2PP2r/3pk1B1/3N4/2K2pN1/8

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.d6#
    • 1...b6
      • 2.d6#
  • Tries
    • 1.Qxb7?
      • threat
        • 2.d6#
      • 1...Qxe6
        • 2.dxe6#
      • 1...Rxe5
        • 2.Sc5#
      • 1...Qe8!
    • 1.d6?
      • threat
        • 2.Qxb7#
      • 1...Qxe6
        • 2.Sxf2#
      • 1...Rxe5
        • 2.Rxe5#
      • 1...Qe8
        • 2.Sxf2#
      • 1...exd6!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Rxd4#
      • 1...Kxd5
        • 2.Qxb7#
      • 1...b6
        • 2.d6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(e);::QAB(J)+P(F)
  • Tries
    • Try
      • Q(J);XP(e)
      • Threat
        • QAB(J)+P(F)
      • Vars
        • Q(g);OGATE,XP(H)::QAB(J)+P(F),XQ(g)
        • R(d);SBLOCK,XP(G)::S(C)
      • Refutation
        • Q(g);
    • Try
      • P(F);P_PINP(e)
      • Threat
        • QAB(J),XP(e)
      • Vars
        • Q(g);N_GUARD,XP(H)::S(C),XP(a)
        • R(d);OGATE,XP(G)::R1(E),XR(d)
        • Q(g);N_GUARD::S(C),XP(a)
      • Refutation
        • P(f);XP(F)
  • Actual
    • R(E);P_PINP(b)
    • Threat
      • R1(E),XP(b)
    • Vars
      • K(c);N_SPINP(b),OGATEB,P_SPINP(e),S_FLIGHT,XP(F)::QAB(J),XP(e)
      • P(e);::QAB(J)+P(F)
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Developed and maintained by Brian Stephenson.
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