MESON Chess Problem Database

Problem Display
PID: 252606 (4N3/1K3p1Q/4pP2/3k4/4R3/4Bn2/3n2R1/7B w - - 0 1)

Silvera, Arthur P

Manchester Weekly Times, 1890

(First published on Sat Apr 12 1890)

4N3/1K3p1Q/4pP2/3k4/4R3/4Bn2/3n2R1/7B

#2

8 + 5

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sg1
      • 2.Rxd2#
    • 1...Sh2
      • 2.Rxd2#
    • 1...Sh4
      • 2.Rxd2#
    • 1...Sg5
      • 2.Rxd2#
  • Tries
    • 1.Ra4?
      • 1...Ke5
        • 2.Ra5#
      • 1...Sd4
        • 2.Rg5#
      • 1...Sb1
        • 2.Qe4#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sb3
        • 2.Qe4#
      • 1...Se4
        • 2.Qxe4#
      • 1...Se1
        • 2.Rg5#
      • 1...Sg1
        • 2.Rg5#
      • 1...Sh2
        • 2.Rg5#
      • 1...Sh4
        • 2.Rg5#
      • 1...Se5
        • 2.Rxd2#
      • 1...Sg5
        • 2.Rxg5#
      • 1...e5
        • 2.Qxf7#
      • 1...Sc4!
  • Keys
    • 1.Rb4!
      • 1...Ke5
        • 2.Rb5#
      • 1...Sd4
        • 2.Rg5#
      • 1...Sb1
        • 2.Qe4#
      • 1...Sf1
        • 2.Qe4#
      • 1...Sb3
        • 2.Qe4#
      • 1...Sc4
        • 2.Rb5#
      • 1...Se4
        • 2.Qxe4#
      • 1...Se1
        • 2.Rg5#
      • 1...Sg1
        • 2.Rg5#
      • 1...Sh2
        • 2.Rg5#
      • 1...Sh4
        • 2.Rg5#
      • 1...Se5
        • 2.Rxd2#
      • 1...Sg5
        • 2.Rxg5#
      • 1...e5
        • 2.Qxf7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::R(B),XS(a)
  • Tries
    • Try
      • R(D);
      • Vars
        • K(c);N_GUARD,P-FLIGHT::R(D)
        • S(b);::B(A)+R(B),DCHECK
        • S(a);N_GUARD::QAB1(G)
        • S(a);N_GUARD::QAB1(G),XS(a)
        • S(b);SBLOCK::B(A)+R(B),DCHECK,XS(a)
        • S(b);::B(A)+R(B),DCHECK,XS(b)
        • P(d);OGATEB,SBLOCK::QAB(G),XP(e)
      • Refutation
        • S(a);
  • Actual
    • R(D);
    • Vars
      • K(c);N_GUARD,P-FLIGHT::R(D)
      • S(b);::B(A)+R(B),DCHECK
      • S(a);N_GUARD::QAB1(G)
      • S(a);SBLOCK::R(D)
      • S(a);N_GUARD::QAB1(G),XS(a)
      • S(b);SBLOCK::B(A)+R(B),DCHECK,XS(a)
      • S(b);::B(A)+R(B),DCHECK,XS(b)
      • P(d);OGATEB,SBLOCK::QAB(G),XP(e)
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