MESON Chess Problem Database

Problem Display
PID: 258534 (1Q6/3N4/p2PpR2/p2p1b2/K3k1n1/2R3P1/2N4P/2n5 w - - 0 1)

Nield, Joshua

English Mechanic and World of Science, 1893

(First published on Fri Dec 15 1893)

1Q6/3N4/p2PpR2/p2p1b2/K3k1n1/2R3P1/2N4P/2n5

#2

9 + 8

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bg6
      • 2.Rf4#
    • 1...Bh7
      • 2.Rf4#
    • 1...Sf2
      • 2.Re3#
    • 1...Sxh2
      • 2.Re3#
    • 1...Se3
      • 2.Rxe3#
    • 1...Se5
      • 2.Sc5#
      • 2.Re3#
    • 1...Sxf6
      • 2.Re3#
    • 1...Sh6
      • 2.Re3#
    • 1...d4
      • 2.Qb7#
      • 2.Qa8#
    • 1...e5
      • 2.Sc5#
  • Tries
    • 1.Rxe6+?
      • 1...Se5
        • 2.Sc5#
        • 2.Sf6#
        • 2.Re3#
        • 2.Rxe5#
      • 1...Bxe6!
    • 1.Qb4+?
      • 1...d4
        • 2.Qxd4#
        • 2.Qb7#
      • 1...axb4!
    • 1.Qb5?
      • 1...Sxh2
        • 2.Re3#
      • 1...Sxf6
        • 2.Re3#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Se3
        • 2.Rxe3#
      • 1...Sa2
        • 2.Qd3#
      • 1...Bg6
        • 2.Rf4#
      • 1...Bh7
        • 2.Rf4#
      • 1...Se2
        • 2.Qd3#
      • 1...Sb3
        • 2.Qd3#
      • 1...Sf2
        • 2.Re3#
      • 1...Se5
        • 2.Sc5#
        • 2.Re3#
      • 1...Sh6
        • 2.Re3#
      • 1...d4
        • 2.Qc6#
        • 2.Qb7#
      • 1...e5
        • 2.Sc5#
      • 1...axb5+!
  • Keys
    • 1.Qb1!
      • 1...Sxh2
        • 2.Re3#
      • 1...Sxf6
        • 2.Re3#
      • 1...Sd3
        • 2.Qh1#
      • 1...Se3
        • 2.Rxe3#
      • 1...d4
        • 2.Qb7#
      • 1...Sa2
        • 2.Qh1#
      • 1...Bg6
        • 2.Rf4#
      • 1...Bh7
        • 2.Rf4#
      • 1...Se2
        • 2.Qh1#
      • 1...Sb3
        • 2.Qh1#
      • 1...Sf2
        • 2.Re3#
      • 1...Se5
        • 2.Sc5#
        • 2.Re3#
      • 1...Sh6
        • 2.Re3#
      • 1...e5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(f);OGATE::R1(G)
    • S(c);N_GUARD::R1(C)
    • S(c);N_GUARD,XP(B)::R1(C)
    • S(c);N_GUARD::R1(C),XS(c)
    • S(c);N_GUARD,XR(G)::R1(C)
    • P(h);SBLOCK::S(H)
  • Tries
    • Try
      • R(G);CHECK,XP(h)
      • Refutation
        • B(f);XR(G)
    • Try
      • Q(I);CHECK
      • Refutation
        • P(d);XQ(I)
    • Try
      • Q(I);
      • Vars
        • S(c);N_GUARD,XP(B)::R1(C)
        • S(c);N_GUARD,XR(G)::R1(C)
        • S(a);N_GUARD::QAB1(I),XS(a)
        • S(c);N_GUARD::R1(C),XS(c)
        • S(a);N_GUARD::QAB1(I)
        • B(f);OGATE::R1(G)
        • S(c);N_GUARD::R1(C)
        • P(h);SBLOCK::S(H)
      • Refutation
        • P(g);CHECK,XQ(I)
  • Actual
    • Q(I);
    • Vars
      • S(c);N_GUARD,XP(B)::R1(C)
      • S(c);N_GUARD,XR(G)::R1(C)
      • S(a);OGATE::QAB(I)
      • S(c);N_GUARD::R1(C),XS(c)
      • P(e);OGATEB::QAB(I)
      • B(f);OGATE::R1(G)
      • S(c);N_GUARD::R1(C)
      • P(h);SBLOCK::S(H)
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