MESON Chess Problem Database

Problem Display
PID: 52203 (q1n1bbQ1/r3p2N/6pp/2P1nPR1/R1B1k1PN/2P1p3/6PB/7K w - - 0 1)

Wright Wood, S (= Wood, SW)

Chess Amateur (The), 1908

q1n1bbQ1/r3p2N/6pp/2P1nPR1/R1B1k1PN/2P1p3/6PB/7K

#2

13 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qd5
      • 2.Qxd5#
    • 1...Qb8
      • 2.Qd5#
    • 1...Rb7
      • 2.Qd5#
    • 1...Sd3
      • 2.Bd5#
    • 1...Sf3
      • 2.gxf3#
    • 1...Sxc4
      • 2.Qxc4#
    • 1...Sxg4
      • 2.Rxg4#
    • 1...Sc6
      • 2.Qd5#
    • 1...Sd7
      • 2.Ba6#
    • 1...hxg5
      • 2.Sxg5#
    • 1...e6
      • 2.Sf6#
  • Tries
    • 1.Bb5+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Rxa4!
    • 1.Ba6+?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Bxa4!
    • 1.Qe6?
      • threat
        • 2.Qxe5#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Qb8
        • 2.Qd5#
      • 1...Bg7!
  • Keys
    • 1.f6!
      • threat
        • 2.Rxe5#
      • 1...Sxc4
        • 2.Qxc4#
      • 1...Sxg4
        • 2.Rxg4#
      • 1...hxg5
        • 2.Sxg5#
      • 1...exf6
        • 2.Sxf6#
      • 1...Qd5
        • 2.Qxd5#
      • 1...Qb8
        • 2.Qd5#
      • 1...Sd3
        • 2.Bd5#
      • 1...Sf3
        • 2.gxf3#
      • 1...Sc6
        • 2.Qd5#
      • 1...Sd7
        • 2.Ba6#
      • 1...Sf7
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • Q(h);N_GUARD::QAB1(M),XQ(h)
    • Q(h);N_GUARD::QAB1(M)
    • R(f);S_CUTQ(h)::QAB1(M)
    • S(c);SBLOCK::R(E)+B(F),DCHECK
    • S(c);OGATE::P(B),XS(c)
    • S(c);OGATE,P_SPINS(c),XB(F)::QAR2(M),XS(c)
    • S(c);OGATE,XP(G)::R(K),XS(c)
    • S(c);S_CUTQ(h)::QAB1(M)
    • S(c);N_GUARD,S_CUTB(j)::R(E)+B(F)
    • P(e);XR(K)::S(L),XP(e)
    • P(g);N_GUARD::S(L)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR2(M),XS(c)
      • Refutation
        • R(f);XR(E)
    • Try
      • B(F);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAR2(M),XS(c)
      • Refutation
        • B(j);XR(E)
    • Try
      • Q(M);P_PINS(c)
      • Threat
        • QAR1(M),XS(c)
      • Vars
        • Q(h);N_GUARD::QAB1(M),XQ(h)
        • Q(h);N_GUARD::QAB1(M)
      • Refutation
        • B(k);
  • Actual
    • P(J);
    • Threat
      • R1(K),XS(c)
    • Vars
      • S(c);OGATE,P_SPINS(c),XB(F)::QAR2(M),XS(c)
      • S(c);OGATE,XP(G)::R(K),XS(c)
      • P(e);XR(K)::S(L),XP(e)
      • P(g);XP(J)::S(L),XP(g)
      • Q(h);N_GUARD::QAB1(M),XQ(h)
      • Q(h);N_GUARD::QAB1(M)
      • S(c);SBLOCK::R(E)+B(F),DCHECK
      • S(c);OGATE::P(B),XS(c)
      • S(c);S_CUTQ(h)::QAB1(M)
      • S(c);N_GUARD,S_CUTB(j)::R(E)+B(F)
      • S(c);N_GUARD,S_CUTB(j)::QAB(M),XP(d)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).