MESON Chess Problem Database

Problem Display
PID: 9784 (1b5n/p2p1N1Q/4k3/R7/1N3p1B/KP3Pn1/B7/8 w - - 0 1)

Chandler, Guy Wills

1st Prize, Weekly Irish Times (Novelty Ty.), 1909

1b5n/p2p1N1Q/4k3/R7/1N3p1B/KP3Pn1/B7/8

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Rxe5#
    • 1...Bd6
      • 2.Sd8#
    • 1...Sf1
      • 2.Qf5#
    • 1...Sh1
      • 2.Qf5#
    • 1...Se2
      • 2.Qf5#
    • 1...Se4
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sh5
      • 2.Qf5#
    • 1...Sg6
      • 2.Qxg6#
    • 1...Sxf7
      • 2.Qg6#
    • 1...d6
      • 2.Sd8#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Sd4#
      • 1...Bd6+
        • 2.b4#
      • 1...Sxf7
        • 2.Qg6#
      • 1...d6
        • 2.Sd8#
      • 1...Be5
        • 2.Rxe5#
      • 1...Se2
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...d5!
    • 1.Rd5?
      • threat
        • 2.Sd8#
      • 1...Sxf7
        • 2.Qg6#
      • 1...Bc7!
    • 1.Ra6+?
      • 1...Bd6
        • 2.Rxd6#
      • 1...d6!
    • 1.Qh6+?
      • 1...Sg6
        • 2.Qxg6#
      • 1...Kxf7!
  • Keys
    • 1.Sa6!
      • 1...Bd6+
        • 2.b4#
      • 1...Sxf7
        • 2.Qg6#
      • 1...d5
        • 2.Sc5#
      • 1...d6
        • 2.Sd8#
      • 1...Bc7
        • 2.Sxc7#
      • 1...Be5
        • 2.Rxe5#
      • 1...Sf1
        • 2.Qf5#
      • 1...Sh1
        • 2.Qf5#
      • 1...Se2
        • 2.Qf5#
      • 1...Se4
        • 2.Qf5#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qf5#
      • 1...Sg6
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD::R1(G),XB(f)
    • B(f);P_PINS(E),SBLOCK::S(H)
    • S(a);N_GUARD::QAB1(I)
    • S(a);N_GUARD::QAB1(I),XS(a)
    • S(g);N_GUARD::QAR2(I),XS(g)
    • S(g);N_GUARD,XS(H)::QAR2(I)
    • P(e);SBLOCK::S(H)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • B(f);CHECK,S_CUTP(e)::B(A)+P(C)
        • S(g);N_GUARD,XS(H)::QAR2(I)
        • P(e);SBLOCK::S(H)
        • B(f);N_GUARD::R1(G),XB(f)
        • S(a);N_GUARD::QAB1(I)
        • S(a);N_GUARD::QAB1(I),XS(a)
      • Refutation
        • P(e);
    • Try
      • R(G);
      • Threat
        • S(H)
      • Vars
        • S(g);N_GUARD,XS(H)::QAR2(I)
      • Refutation
        • B(f);
    • Try
      • R(G);CHECK
      • Vars
        • B(f);N_GUARD,P_PINS(E),P_SPINB(f)::R1(G),XB(f)
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(I);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::QAR2(I),XS(g)
      • Refutation
        • K(c);S_FLIGHT,XS(H)
  • Actual
    • S(E);
    • Vars
      • B(f);CHECK,S_CUTP(e)::B(A)+P(C)
      • S(g);N_GUARD,XS(H)::QAR2(I)
      • P(e);SBLOCK::S(E)
      • P(e);SBLOCK::S(H)
      • B(f);N_GUARD::S(E),XB(f)
      • B(f);N_GUARD::R1(G),XB(f)
      • S(a);N_GUARD::QAB1(I)
      • S(a);N_GUARD::QAB1(I),XS(a)
      • S(g);N_GUARD::QAR2(I),XS(g)
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