MESON Chess Problem Database

Problem Display
PID: 245766 (B4R2/6p1/4p3/1pRNq1B1/3pk3/Q2NP1p1/8/2K2b1n w - - 0 1)

Wrobel, Marian

Skakbladet, 1946

B4R2/6p1/4p3/1pRNq1B1/3pk3/Q2NP1p1/8/2K2b1n

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qd6
      • 2.Sf6#
    • 1...Qf6
      • 2.S5b4#
      • 2.Sb6#
      • 2.Sxf6#
      • 2.Sc7#
      • 2.Se7#
    • 1...Qc7
      • 2.Sf6#
      • 2.Sxc7#
    • 1...Qb8
      • 2.Sf6#
    • 1...Qf5
      • 2.Sf6#
    • 1...Bxd3
      • 2.Sc3#
  • Tries
    • 1.S5f4+?
      • 1...Kxe3
        • 2.Rxe5#
      • 1...Qd5!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Sc5#
      • 1...Qxd5
        • 2.Rxd4#
      • 1...Qxg5
        • 2.Rxd4#
      • 1...Bxd3
        • 2.Sc3#
      • 1...Qf4
        • 2.Rxf4#
      • 1...Qf6
        • 2.Se7#
      • 1...Qf5
        • 2.Sf6#
      • 1...Qd6
        • 2.Rxd4#
      • 1...Qc7
        • 2.Sxc7#
      • 1...Qb8
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_GUARD,P_PINP(D)::R1(I),XQ(g)
    • Q(g);::B(H)+S(F),DCHECK
    • B(a);SBLOCK,XS(C)::B(H)+S(F),DCHECK
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT,XP(D)::R(E),XQ(g)
      • Refutation
        • Q(g);P_SPINQ(g)
  • Actual
    • R(E);P_PINP(d)
    • Threat
      • S(C)
    • Vars
      • Q(g);N_GUARD,P_SPINQ(g),XS(F)::R1(E),XP(d)
      • Q(g);N_GUARD,P_PINP(D),XB(G)::R1(E),XP(d)
      • B(a);SBLOCK,XS(C)::B(H)+S(F),DCHECK
      • Q(g);N_GUARD,P_PINP(D)::R1(I),XQ(g)
      • Q(g);N_GUARD::B(H)+S(F)
      • Q(g);SBLOCK::B(H)+S(F),DCHECK
      • Q(g);N_GUARD::R1(E),XP(d)
      • Q(g);N_GUARD,P_PINR(E)::B(H)+S(F),XQ(g)
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