MESON Chess Problem Database

Problem Display
PID: 91425 (8/8/8/B7/3pQp2/2npbP1B/RN5R/K2Nk3 w - - 0 1)

Molanus, Hendrik Jan

Probleemblad, 1963

8/8/8/B7/3pQp2/2npbP1B/RN5R/K2Nk3

#2

9 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sxc3?
      • threat
        • 2.Sxd3#
      • 1...d2
        • 2.Sd3#
        • 2.Re2#
      • 1...dxc3!
    • 1.Sxe3?
      • threat
        • 2.Sxd3#
        • 2.Sed1#
        • 2.Sf1#
        • 2.Sc2#
        • 2.Sec4#
        • 2.Sg4#
        • 2.Sd5#
        • 2.Sf5#
      • 1...fxe3
        • 2.Qh4#
      • 1...d2
        • 2.Sd3#
        • 2.Sc2#
      • 1...dxe3!
    • 1.Bxc3+?
      • 1...d2
        • 2.Bxd2#
      • 1...dxc3!
    • 1.Rh1+?
      • 1...Kd2
        • 2.Sxd3#
      • 1...Ke2!
    • 1.Qxd3?
      • threat
        • 2.Re2#
        • 2.Qf1#
        • 2.Qe2#
      • 1...Bd2
        • 2.Rh1#
        • 2.Qf1#
        • 2.Qxd2#
      • 1...Bf2!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sbxd3#
        • 2.Sfxd3#
      • 1...Kd2
        • 2.Sbxd3#
      • 1...Ke2
        • 2.Sfxd3#
      • 1...d2
        • 2.Sfd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);XS(b)
      • Threat
        • S(D),XP(c)
      • Refutation
        • P(e);P_SPINP(e),XS(B)
    • Try
      • S(B);XB(d)
      • Threat
        • DUALS(8)
      • Vars
        • P(f);OGATE,P_SPINP(f),XS(B)::QAB(H)
      • Refutation
        • P(e);P_SPINP(e),XS(B)
    • Try
      • B(I);CHECK,XS(b)
      • Vars
        • P(c);P_SPINP(c)::B(I),XP(c)
      • Refutation
        • P(e);XB(I)
    • Try
      • R(E);CHECK
      • Vars
        • K(a);N_SPINB(d),S_FLIGHT::R(C)+S(D),XP(c)
      • Refutation
        • K(a);N_SPINS(b),P-FLIGHT
    • Try
      • Q(H);N_PINB(d),XP(c)
      • Threat
        • DUALS(3)
      • Refutation
        • B(d);
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);N_SPINB(d),S_FLIGHT::R(C)+S(D),XP(c)
      • K(a);N_SPINS(b),P-FLIGHT::R(E)+S(B),XP(c)
      • P(c);N_SPINS(b)::S(B)
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