MESON Chess Problem Database

Problem Display
PID: 228100 (8/6N1/6p1/4k1P1/2RN4/2Q2R2/2n5/n6K w - - 0 1)

Henriksen, Thorleif Cammillo

Tidskrift for Schack, 1911

8/6N1/6p1/4k1P1/2RN4/2Q2R2/2n5/n6K

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd4
      • 2.Qxd4#
  • Tries
    • 1.Sxc2+?
      • 1...Kd5
        • 2.Rd3#
        • 2.Qd4#
      • 1...Kd6!
    • 1.Sb5+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kd5!
    • 1.Sdf5+?
      • 1...Sd4
        • 2.Qxd4#
      • 1...Kd5!
    • 1.Rc5+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Kd6!
    • 1.Qe3+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Kd6
        • 2.Qe6#
      • 1...Sxe3!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Sxc2#
        • 2.Sf3#
        • 2.Sc6#
      • 1...Ke4
        • 2.Sxc2#
      • 1...Kf4
        • 2.Sde6#
      • 1...Kd5
        • 2.Sxc2#
      • 1...Kd6
        • 2.Sdf5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Sb3
        • 2.Sf3#
        • 2.Sc6#
      • 1...Se1
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sdf5#
        • 2.Sc6#
        • 2.Sde6#
      • 1...Sa3
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sdf5#
        • 2.Sc6#
        • 2.Sde6#
      • 1...Se3
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sdf5#
        • 2.Sc6#
        • 2.Sde6#
      • 1...Sb4
        • 2.Sc2#
        • 2.Se2#
        • 2.Sb3#
        • 2.Sf3#
        • 2.Sb5#
        • 2.Sdf5#
        • 2.Sc6#
        • 2.Sde6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,P_SPINS(b),XS(E)::QAB1(B),XS(b)
  • Tries
    • Try
      • S(E);CHECK,XS(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(E);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB1(B),XS(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);OGATE,P-FLIGHT::QAB1(B)
        • K(c);OGATE,S_FLIGHT::QAR1(B)
      • Refutation
        • S(b);XQ(B)
  • Actual
    • R(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(c);P-FLIGHT::R(D)+S(E),XS(b)
      • K(c);S_FLIGHT::R(D)+S(E),DCHECK
      • K(c);P-FLIGHT::R(C)+S(E),XS(b)
      • K(c);S_FLIGHT::R(C)+S(E),DCHECK
      • S(b);OGATE,P_SPINS(b),XS(E)::QAB1(B),XS(b)
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