MESON Chess Problem Database

Problem Display
PID: 222655 (4n3/3p4/1Q1pPp2/4bP2/r1k1B3/2P5/2R2B2/2n4K w - - 0 1)

Bristow, Henry

English Mechanic and World of Science, 1884

(First published on Fri Apr 25 1884)

4n3/3p4/1Q1pPp2/4bP2/r1k1B3/2P5/2R2B2/2n4K

#2

8 + 8

6490 yacpdb 2020
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Qb4#
    • 1...Ra2
      • 2.Qb4#
    • 1...Ra3
      • 2.Qb4#
    • 1...Rb4
      • 2.Qxb4#
    • 1...Ra5
      • 2.Qb4#
    • 1...Ra6
      • 2.Qb4#
    • 1...Ra7
      • 2.Qb4#
    • 1...Ra8
      • 2.Qb4#
    • 1...Bd4
      • 2.cxd4#
  • Keys
    • 1.Rb2!
      • 1...Kxc3
        • 2.Rc2#
      • 1...Bxc3
        • 2.Qb5#
      • 1...dxe6
        • 2.Qc6#
      • 1...Bh2
        • 2.Qd4#
      • 1...Ra1
        • 2.Qb4#
      • 1...Ra2
        • 2.Qb4#
      • 1...Ra3
        • 2.Qb4#
      • 1...Rb4
        • 2.Qxb4#
      • 1...Ra5
        • 2.Qb4#
      • 1...Ra6
        • 2.Qb4#
      • 1...Ra7
        • 2.Qb4#
      • 1...Ra8
        • 2.Qb4#
      • 1...Bg3
        • 2.Qd4#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Bf4
        • 2.Qd4#
      • 1...Sa2
        • 2.Qb3#
      • 1...Se2
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sd3
        • 2.Qb3#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Sg7
        • 2.Qc7#
      • 1...d5
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::QAR1(G)
    • R(b);N_GUARD::QAR1(G),XR(b)
    • B(d);OGATE::R(B)+P(D),XB(d)
  • Actual
    • R(B);
    • Vars
      • K(c);OGATEB,P-FLIGHT,XP(D)::R1(B)
      • B(d);SBLOCK,XP(D)::QAB1(G)
      • P(g);N_GUARD,XP(H)::QAR2(G)
      • B(d);N_GUARD::QAR1(G)
      • R(b);N_GUARD::QAR1(G)
      • R(b);N_GUARD::QAR1(G),XR(b)
      • B(d);N_GUARD::QAR1(G),XB(d)
      • S(a);N_GUARD::QAB1(G)
      • S(a);N_GUARD::QAB1(G),XS(a)
      • S(h);N_GUARD::QAR(G),XS(h)
      • S(h);N_GUARD::QAR(G)
      • P(e);N_GUARD::QAR1(G)
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