MESON Chess Problem Database

Problem Display
PID: 186244 (1R1N4/8/3p2p1/1pnkn1Q1/1P2p3/KPPP3r/8/3R1N2 w - - 0 1)

Bianquis, A

Bulletin Ouvrier des Echecs, 1947

1R1N4/8/3p2p1/1pnkn1Q1/1P2p3/KPPP3r/8/3R1N2

#2

10 + 8

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rh1
      • 2.Se3#
    • 1...Rh2
      • 2.Se3#
    • 1...Rxd3
      • 2.Se3#
    • 1...Re3
      • 2.Sxe3#
    • 1...Rh4
      • 2.Se3#
    • 1...Rh5
      • 2.Se3#
    • 1...Rh6
      • 2.Se3#
    • 1...Rh7
      • 2.Se3#
    • 1...Rh8
      • 2.Se3#
    • 1...Sxd3
      • 2.Rxb5#
  • Tries
    • 1.c4+?
      • 1...bxc4
        • 2.dxc4#
      • 1...Kd4!
  • Keys
    • 1.Qf4!
      • threat
        • 2.dxe4#
      • 1...Sc4+
        • 2.dxc4#
      • 1...Rxd3
        • 2.Se3#
      • 1...Sxb3
        • 2.Qxe4#
      • 1...Scxd3
        • 2.Rxb5#
      • 1...Sexd3
        • 2.Qg5#
      • 1...exd3
        • 2.Qd4#
      • 1...e3
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::S(B)
    • R(a);N_GUARD,P_SPINR(a),XP(F)::S(B)
    • R(a);N_GUARD::S(B),XR(a)
    • S(d);N_SPINS(f),OGATEB,P_SPINS(d),XP(F)::R(I),XP(c)
  • Tries
    • Try
      • P(E);CHECK
      • Vars
        • P(c);OGATE,XP(E)::R(A)+P(F)DCHECK,XP(c)
      • Refutation
        • K(e);N_SPINS(f),P-FLIGHT
  • Actual
    • Q(H);N_PINS(f)
    • Threat
      • R(A)+P(F)DCHECK,XP(b)
    • Vars
      • S(f);CHECK,OGATE::R(A)+P(F)DCHECK,XS(f)
      • R(a);N_GUARD,P_SPINR(a),XP(F)::S(B)
      • S(d);N_GUARD,XP(D)::QAB1(H),XP(b)
      • S(d);OGATEB,P_SPINS(d),XP(F)::R(I),XP(c)
      • S(f);OGATEB,P_SPINS(f),XP(F)::QAR(H)
      • P(b);OGATE,P_SPINP(b),XP(F)::QAR1(H)
      • P(b);OGATE::QAR1(H)
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