MESON Chess Problem Database

Problem Display
PID: 183477 (1RR5/4pn2/4p3/N2k2N1/1B6/n6p/KQ4r1/7B w - - 0 1)

Wainwright, Joseph CJ

British Chess Magazine, 1914

1RR5/4pn2/4p3/N2k2N1/1B6/n6p/KQ4r1/7B

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sb1
      • 2.Rb5#
    • 1...Sc2
      • 2.Rb5#
    • 1...Sc4
      • 2.Rb5#
    • 1...Sb5
      • 2.Rxb5#
    • 1...Sd6
      • 2.Rc5#
    • 1...Sh6
      • 2.Rd8#
    • 1...Sd8
      • 2.Rxd8#
    • 1...Sh8
      • 2.Rd8#
    • 1...h2
      • 2.Bxg2#
    • 1...e5
      • 2.Qd2#
  • Tries
    • 1.Kxa3?
      • threat
        • 2.Rb5#
      • 1...Sd6
        • 2.Rc5#
      • 1...Sxg5!
    • 1.Sc4?
      • threat
        • 2.Se3#
        • 2.Sb6#
        • 2.Rc5#
        • 2.Qd2#
      • 1...Sxc4
        • 2.Rb5#
      • 1...Se5
        • 2.Se3#
        • 2.Sb6#
        • 2.Rc5#
      • 1...Sb1
        • 2.Se3#
        • 2.Sb6#
        • 2.Rb5#
        • 2.Rc5#
      • 1...Sc2
        • 2.Sb6#
        • 2.Rb5#
        • 2.Rc5#
      • 1...Sb5
        • 2.Se3#
        • 2.Sb6#
        • 2.Rxb5#
        • 2.Rc5#
      • 1...Sxg5!
    • 1.Bxa3?
      • threat
        • 2.Rb5#
      • 1...Sd6
        • 2.Rc5#
      • 1...Sxg5!
    • 1.Rd8+?
      • 1...Sxd8
        • 2.Rxd8#
      • 1...Sd6!
  • Keys
    • 1.Rc4!
      • 1...Sxc4
        • 2.Rb5#
      • 1...Sxg5
        • 2.Rd8#
      • 1...Se5
        • 2.Rd4#
      • 1...Sb1
        • 2.Rb5#
      • 1...Sc2
        • 2.Rb5#
      • 1...Sb5
        • 2.Rxb5#
      • 1...Sd6
        • 2.Rc5#
      • 1...Sh6
        • 2.Rd8#
      • 1...Sd8
        • 2.Rxd8#
      • 1...Sh8
        • 2.Rd8#
      • 1...h2
        • 2.Bxg2#
      • 1...e5
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::R(G)
    • S(b);N_GUARD,N_PINQ(C)::R(G)
    • S(b);N_GUARD::R(G),XS(b)
    • S(g);SBLOCK::R1(H)
    • S(g);N_GUARD::R(H)
    • S(g);N_GUARD::R(H),XS(g)
    • P(c);N_GUARD::B(A),XR(a)
    • P(e);SBLOCK::QAR(C)
  • Tries
    • Try
      • K(B);N_SPINQ(C),P-FLIGHT,XS(b)
      • Threat
        • R(G)
      • Vars
        • S(g);SBLOCK::R1(H)
      • Refutation
        • S(g);XS(F)
    • Try
      • S(E);
      • Threat
        • DUALS(4)
      • Vars
        • S(b);N_GUARD,XS(E)::R(G)
      • Refutation
        • S(g);XS(F)
    • Try
      • B(D);XS(b)
      • Threat
        • R(G)
      • Vars
        • S(g);SBLOCK::R1(H)
      • Refutation
        • S(g);XS(F)
    • Try
      • R(H);CHECK
      • Vars
        • S(g);OGATE,XR(H)::R(G),XS(g)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • R(H);
    • Vars
      • S(b);N_GUARD,XR(H)::R(G)
      • S(g);N_GUARD,XS(F)::R(G)
      • S(g);SBLOCK::R1(H)
      • S(b);N_GUARD::R(G)
      • S(b);N_GUARD,N_PINQ(C)::R(G)
      • S(b);N_GUARD::R(G),XS(b)
      • S(g);N_GUARD::R(G)
      • S(g);N_GUARD::R(G),XS(g)
      • P(c);N_GUARD::B(A),XR(a)
      • P(e);SBLOCK::QAR(C)
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