MESON Chess Problem Database

Problem Display
PID: 258532 (8/2Qp1p2/3n1P2/4p2R/2P1k3/8/2PP2K1/1BB5 w - - 0 1)

Fellows, Arthur G

English Mechanic and World of Science, 1893

(First published on Fri Nov 3 1893)

8/2Qp1p2/3n1P2/4p2R/2P1k3/8/2PP2K1/1BB5

#2

9 + 5

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.c3#
    • 1...Sxc4
      • 2.Qxc4#
    • 1...Sb5
      • 2.Qxe5#
    • 1...Sb7
      • 2.Qxe5#
    • 1...Sc8
      • 2.Qxe5#
    • 1...Se8
      • 2.Qxe5#
  • Tries
    • 1.Kg3?
      • threat
        • 2.c3#
      • 1...Kd4
        • 2.c3#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sf5+!
    • 1.Bb2?
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sb5
        • 2.Qxe5#
      • 1...Sf5
        • 2.Qxe5#
      • 1...Sb7
        • 2.Qxe5#
      • 1...Sc8
        • 2.Qxe5#
      • 1...Se8
        • 2.Qxe5#
      • 1...Kf4!
    • 1.Qc5?
      • threat
        • 2.Qe3#
        • 2.Qxe5#
        • 2.d3#
      • 1...Sxc4
        • 2.Qxc4#
        • 2.d3#
      • 1...Sf5
        • 2.d3#
      • 1...Kf4!
    • 1.Qc6+?
      • 1...Kd4
        • 2.Bb2#
        • 2.Qd5#
        • 2.c3#
      • 1...Kf4
        • 2.Qf3#
      • 1...dxc6!
    • 1.Qb7+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Qf3#
      • 1...Sxb7!
    • 1.Qxd7?
      • threat
        • 2.Rh4#
        • 2.Qg4#
      • 1...Kf4
        • 2.d3#
      • 1...Sxc4
        • 2.Rh4#
        • 2.d3#
      • 1...Sf5
        • 2.d3#
      • 1...Kd4!
  • Keys
    • 1.Rg5!
      • 1...Kd4
        • 2.c3#
      • 1...Kf4
        • 2.d3#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sf5
        • 2.Rg4#
      • 1...Sb5
        • 2.Qxe5#
      • 1...Sb7
        • 2.Qxe5#
      • 1...Sc8
        • 2.Qxe5#
      • 1...Se8
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,P-FLIGHT::P(C)
    • S(c);OGATE,XP(F)::QAR2(I),XS(c)
    • S(c);OGATE::QAR1(I),XP(b)
  • Tries
    • Try
      • K(E);P-FLIGHT
      • Threat
        • B(A)+P(C)
      • Vars
        • K(a);P-FLIGHT::P(C)
        • S(c);OGATE,XP(F)::QAR2(I),XS(c)
      • Refutation
        • S(c);CHECK
    • Try
      • B(B);
      • Vars
        • S(c);OGATE,XP(F)::QAR2(I),XS(c)
        • S(c);OGATE::QAR1(I),XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(I);
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::P(D)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • P(d);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR1(I)
        • K(a);OGATE,P-FLIGHT::QAR1(I)
      • Refutation
        • S(c);XQ(I)
    • Try
      • Q(I);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);N_GUARD,P-FLIGHT::B(B)+P(D)
        • S(c);::P(D)
      • Refutation
        • K(a);P-FLIGHT,P_SPINS(c)
  • Actual
    • R(G);
    • Vars
      • K(a);N_GUARD,P-FLIGHT::P(C)
      • K(a);N_GUARD,P-FLIGHT::B(B)+P(D)
      • S(c);OGATE,XP(F)::QAR2(I),XS(c)
      • S(c);SBLOCK::R(G)
      • S(c);OGATE::QAR1(I),XP(b)
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