MESON Chess Problem Database

Problem Display
PID: 154326 (K4nB1/7N/8/4p3/1PpkP2R/R2p4/4qPp1/N4bB1 w - - 0 1)

Easthope, M

Sheffield Guardian (The), 1910

(First published on Fri May 20 1910)

K4nB1/7N/8/4p3/1PpkP2R/R2p4/4qPp1/N4bB1

#2

10 + 8

15239 Valois Notebooks 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1
      • 2.f3#
    • 1...Qg4
      • 2.f3#
    • 1...Qh5
      • 2.f3#
    • 1...Qxf2
      • 2.Bxf2#
    • 1...Qe3
      • 2.fxe3#
    • 1...d2
      • 2.Sc2#
    • 1...c3
      • 2.Sb3#
  • Tries
    • 1.Sxf8?
      • threat
        • 2.Se6#
      • 1...Qxf2
        • 2.Bxf2#
      • 1...Qg4
        • 2.f3#
      • 1...c3
        • 2.Sb3#
      • 1...Qxe4+!
    • 1.f3+?
      • 1...Qf2
        • 2.Bxf2#
      • 1...Qe3!
  • Keys
    • 1.Sg5!
      • 1...Qxe4+
        • 2.Rxe4#
      • 1...Qxf2
        • 2.Bxf2#
      • 1...Qd1
        • 2.f3#
        • 2.f4#
      • 1...Qf3
        • 2.Sxf3#
      • 1...Qg4
        • 2.f3#
        • 2.f4#
      • 1...Qh5
        • 2.f3#
        • 2.f4#
      • 1...Qe1
        • 2.Sf3#
      • 1...Qa2
        • 2.Sf3#
      • 1...Qb2
        • 2.Sf3#
      • 1...Qc2
        • 2.Sf3#
      • 1...Qd2
        • 2.Sf3#
      • 1...Qe3
        • 2.fxe3#
      • 1...Se6
        • 2.Sxe6#
      • 1...Sg6
        • 2.Se6#
      • 1...Sd7
        • 2.Se6#
      • 1...Sh7
        • 2.Se6#
      • 1...d2
        • 2.Sc2#
      • 1...c3
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_GUARD::B(B)+P(C)
    • Q(b);OGATE,P_SPINQ(b),XP(C)::B(B),XQ(b)
    • Q(b);OGATE::P(C),XQ(b)
    • P(d);N_GUARD,S_CUTQ(b)::S(A)
    • P(e);N_GUARD,SBLOCK::S(A)
  • Tries
    • Try
      • S(H);XS(h)
      • Threat
        • S(H)
      • Vars
        • Q(b);OGATE,P_SPINQ(b),XP(C)::B(B),XQ(b)
        • Q(b);N_GUARD::B(B)+P(C)
        • P(e);N_GUARD,SBLOCK::S(A)
      • Refutation
        • Q(b);CHECK,P_SPINQ(b),XP(F)
    • Try
      • P(C);CHECK
      • Vars
        • Q(b);N_GUARD,P_SPINQ(b)::B(B),XQ(b)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • S(H);
    • Vars
      • Q(b);CHECK,OGATE,P_SPINQ(b),XP(F)::R1(G),XQ(b)
      • Q(b);OGATE,P_SPINQ(b),XP(C)::B(B),XQ(b)
      • Q(b);N_GUARD,P_PINP(F)::S(H),XQ(b)
      • Q(b);N_GUARD::S(H)
      • Q(b);N_GUARD,P_PINR(D)::S(H)
      • Q(b);OGATE::P(C),XQ(b)
      • S(h);N_GUARD::S(H),XS(h)
      • S(h);N_GUARD::S(H)
      • P(d);N_GUARD,S_CUTQ(b)::S(A)
      • P(e);N_GUARD,SBLOCK::S(A)
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