MESON Chess Problem Database

Problem Display
PID: 255975 (1b6/Bb6/1RQ1p2N/1r4p1/1q2r3/2P1k3/4Np2/3R1K1B w - - 0 1)

Belschan, Josef

Wiener Schachzeitung, 1936

1b6/Bb6/1RQ1p2N/1r4p1/1q2r3/2P1k3/4Np2/3R1K1B

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc3
      • 2.Qxc3#
    • 1...Bf4
      • 2.Sg4#
    • 1...e5
      • 2.Sf5#
  • Tries
    • 1.Qxe4+?
      • 1...Bxe4
        • 2.Sg4#
      • 1...Qxe4!
  • Keys
    • 1.Qxe6!
      • threat
        • 2.Sg4#
      • 1...Rxe6
        • 2.Rxe6#
      • 1...Ree5
        • 2.Sf5#
      • 1...Rbe5
        • 2.Qh3#
      • 1...Be5
        • 2.Sf5#
      • 1...g4
        • 2.Sxg4#

This is a version

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • Q(c);OGATE,XP(E)::QAR2(G),XQ(c)
    • B(i);S_CUTR(d)::S(H)
    • P(g);N_GUARD,S_CUTR(e)::S(H)
  • Tries
    • Try
      • Q(G);CHECK,XR(d)
      • Vars
        • B(h);XQ(G)::S(H)
      • Refutation
        • Q(c);XQ(G)
  • Actual
    • Q(G);P_PINR(d),XP(g)
    • Threat
      • S(H)
    • Vars
      • R(d);N_SPINR(d),OGATE,XQ(G)::B(I)+R(F),DCHECK,XR(d)
      • R(d);S_CUTR(e)::S(H)
      • R(e);N_SPINR(d),S_CUTB(i)::QAR(G)
      • B(i);N_SPINR(d),S_CUTR(e)::S(H)
      • P(f);::S(H),XP(f)
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