MESON Chess Problem Database

Problem Display
PID: 185002 (bKQ5/5N2/p4p2/P1Nk2n1/1p1rR1P1/8/5P2/5B2 w - - 0 1)

Brooke, HL

British Chess Magazine, 1917

bKQ5/5N2/p4p2/P1Nk2n1/1p1rR1P1/8/5P2/5B2

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Bc4#
    • 1...Rd2
      • 2.Bc4#
    • 1...Rc4
      • 2.Bxc4#
    • 1...Bc6
      • 2.Qf5#
    • 1...f5
      • 2.Re5#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Rxd4#
      • 1...Kxe4
        • 2.Qf5#
      • 1...Rxe4
        • 2.Qd7#
      • 1...Sxf7
        • 2.Qe6#
      • 1...Rd1
        • 2.Qc4#
      • 1...Rd2
        • 2.Qc4#
      • 1...Rd3
        • 2.Qc4#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Sf3
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sxe4!
  • Keys
    • 1.Sa4!
      • 1...Kxe4
        • 2.Qf5#
      • 1...Rxe4
        • 2.Qd7#
      • 1...Sxe4
        • 2.Sb6#
      • 1...Sxf7
        • 2.Qe6#
      • 1...Rd1
        • 2.Qc4#
      • 1...Rd2
        • 2.Qc4#
      • 1...Rd3
        • 2.Qc4#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Bc6
        • 2.Qf5#
      • 1...Bb7
        • 2.Qxb7#
      • 1...Sf3
        • 2.Qe6#
      • 1...Sh3
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...b3
        • 2.Sc3#
      • 1...f5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::B(A)
    • R(b);N_GUARD::B(A),XR(b)
    • B(g);SBLOCK::QAR2(I)
    • P(f);N_GUARD::R1(C)
  • Tries
    • Try
      • S(F);
      • Threat
        • R1(C),XR(b)
      • Vars
        • K(c);S_FLIGHT,XR(C)::QAB1(I)
        • R(b);SBLOCK,XR(C)::QAR2(I)
        • S(d);N_GUARD,XS(G)::QAB1(I)
        • R(b);N_GUARD::QAB1(I)
        • R(b);N_GUARD::QAB1(I),XR(b)
        • S(d);N_GUARD::QAB1(I)
        • S(d);N_GUARD::QAB1(I),XS(d)
      • Refutation
        • S(d);XR(C)
  • Actual
    • S(F);
    • Vars
      • K(c);S_FLIGHT,XR(C)::QAB1(I)
      • R(b);SBLOCK,XR(C)::QAR2(I)
      • S(d);SBLOCK,XR(C)::S(F)
      • S(d);N_GUARD,XS(G)::QAB1(I)
      • R(b);N_GUARD::QAB1(I)
      • R(b);N_GUARD::QAB1(I),XR(b)
      • B(g);SBLOCK::QAR2(I)
      • B(g);N_GUARD::QAB(I),XB(g)
      • S(d);N_GUARD::QAB1(I)
      • S(d);N_GUARD::QAB1(I),XS(d)
      • P(a);N_GUARD::S(F)
      • P(f);N_GUARD::R1(C)
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