MESON Chess Problem Database

Problem Display
PID: 242703 (B7/1n2B1Q1/R1n1b3/3kpp1R/1P6/2K3N1/4P3/8 w - - 0 1)

Hartong, Jan

Tijdschrift vd KNSB, 1957

B7/1n2B1Q1/R1n1b3/3kpp1R/1P6/2K3N1/4P3/8

#2

9 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bf7
      • 2.Qxf7#
    • 1...Bg8
      • 2.Qxg8#
    • 1...Sd4
      • 2.Rd6#
    • 1...Sca5
      • 2.Rd6#
    • 1...Sa7
      • 2.Rd6#
    • 1...Sb8
      • 2.Rd6#
    • 1...Scd8
      • 2.Rd6#
    • 1...Sba5
      • 2.Rxa5#
    • 1...Sc5
      • 2.Bxc6#
    • 1...Sd6
      • 2.Bxc6#
    • 1...Sbd8
      • 2.Ra5#
  • Tries
    • 1.Rxc6?
      • threat
        • 2.Rc5#
        • 2.Rd6#
      • 1...Bd7
        • 2.Rd6#
      • 1...Bf7
        • 2.Rd6#
      • 1...Bc8
        • 2.Rd6#
      • 1...Bg8
        • 2.Rd6#
      • 1...Sc5
        • 2.Rxc5#
        • 2.Rd6#
      • 1...Sd6
        • 2.Rc5#
        • 2.Rxd6#
      • 1...Kxc6!
    • 1.Qxe5+?
      • 1...Sxe5
        • 2.Rd6#
      • 1...Kxe5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qc4#
      • 1...fxg4
        • 2.e4#
      • 1...e4
        • 2.Qxe4#
      • 1...Sd4
        • 2.Rd6#
      • 1...Sca5
        • 2.Rd6#
      • 1...Sba5
        • 2.Rxa5#
      • 1...Sd6
        • 2.Bxc6#
      • 1...f4
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • B(e);OGATEB::QAB(H),XB(e)
    • S(d);OGATE,P_SPINS(f)::R1(F)
    • S(f);N_GUARD,P_SPINS(d)::R(F),XS(f)
    • S(f);OGATE,P_SPINS(d)::B(I),XS(d)
    • S(f);N_GUARD,P_SPINS(d)::R(F)
  • Tries
    • Try
      • R(F);XS(d)
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::R1(F)
      • Refutation
        • K(a);P_SPINS(f),S_FLIGHT,XR(F)
    • Try
      • Q(H);CHECK,XP(b)
      • Vars
        • S(d);OGATE,P_SPINS(f),SBLOCK,XQ(H)::R1(F)
      • Refutation
        • K(a);P-FLIGHT,P_SPINP(c),XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • P(c);N_GUARD,P_SPINP(b),XQ(H)::P(A)
      • P(b);P_SPINP(c)::QAB1(H),XP(b)
      • S(d);OGATE,P_SPINS(f)::R1(F)
      • S(f);N_GUARD,P_SPINS(d)::R(F),XS(f)
      • S(f);OGATE,P_SPINS(d)::B(I),XS(d)
      • P(c);P_SPINP(b)::QAB(H)
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