MESON Chess Problem Database

Problem Display
PID: 245778 (3K4/2pp1Q1N/2p2Pp1/2p1b2R/Rn2k2p/2rr4/2B1N1P1/2B5 w - - 0 1)

Wrobel, Marian

Parallele 50, 1950

3K4/2pp1Q1N/2p2Pp1/2p1b2R/Rn2k2p/2rr4/2B1N1P1/2B5

#2

10 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qxg6#
    • 1...Bg3
      • 2.Qxg6#
    • 1...Bd4
      • 2.Qxg6#
    • 1...Bf4
      • 2.Qxg6#
    • 1...Bd6
      • 2.Qxg6#
    • 1...Bxf6+
      • 2.Sxf6#
    • 1...d5
      • 2.Qxg6#
  • Tries
    • 1.Rxh4+?
      • 1...Kf5
        • 2.Qxd7#
      • 1...Bf4!
    • 1.Qc4+?
      • 1...Bd4
        • 2.Sxc3#
      • 1...Rxc4!
    • 1.Qe6?
      • threat
        • 2.Sg5#
        • 2.Rxh4#
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...gxh5
        • 2.Sg5#
      • 1...h3
        • 2.Sg5#
        • 2.Rh4#
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...g5
        • 2.Sxg5#
      • 1...d6
        • 2.Sg5#
        • 2.Rxh4#
      • 1...dxe6+!
  • Keys
    • 1.Qxd7!
      • threat
        • 2.Sg5#
      • 1...Bxf6+
        • 2.Sxf6#
      • 1...Bh2
        • 2.Sxc3#
      • 1...Bg3
        • 2.Sxc3#
      • 1...Bd4
        • 2.Qg4#
      • 1...Bf4
        • 2.Sxc3#
      • 1...Bd6
        • 2.Qxc6#
      • 1...g5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(g);::QAB(H),XP(i)
    • B(g);N_SPINS(c)::QAB(H),XP(i)
    • B(g);CHECK,XP(G)::S(I),XB(g)
    • P(k);SBLOCK::QAB(H),XP(i)
  • Tries
    • Try
      • R(F);CHECK,XP(e)
      • Vars
        • K(d);N_SPINS(c),S_FLIGHT::QAB(H),XP(k)
      • Refutation
        • B(g);P_SPINB(g)
    • Try
      • Q(H);CHECK,N_PINS(c)
      • Vars
        • B(g);P_SPINB(g)::S(C),XR(a)
      • Refutation
        • R(a);XQ(H)
    • Try
      • Q(H);P_PINB(g)
      • Threat
        • DUALS(4)
      • Vars
        • P(i);XR(F)::S(I)
        • P(i);::S(I),XP(i)
      • Refutation
        • P(k);CHECK,N_SPINB(g),XQ(H)
  • Actual
    • Q(H);P_SPINQ(H),XP(k)
    • Threat
      • S(I)
    • Vars
      • B(g);CHECK,XP(G)::S(I),XB(g)
      • B(g);N_GUARD::S(C),XR(a)
      • B(g);N_PINQ(H),N_SPINS(c)::QAR2(H)
      • B(g);N_PINQ(H)::QAB(H),XP(h)
      • P(i);::S(I),XP(i)
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