MESON Chess Problem Database

Problem Display
PID: 5096 (4n2Q/2p2Nn1/P1k1P2b/4R3/N1rp4/3P4/1R2K3/3B4 w - - 0 1)

Blake, Percy Francis

Reading Observer, 1899

4n2Q/2p2Nn1/P1k1P2b/4R3/N1rp4/3P4/1R2K3/3B4

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rc2+
      • 2.Rxc2#
    • 1...Rxa4
      • 2.Bxa4#
    • 1...Rb4
      • 2.Rc5#
    • 1...Rc5
      • 2.Rxc5#
    • 1...Bc1
      • 2.Qh1#
    • 1...Bd2
      • 2.Qh1#
    • 1...Be3
      • 2.Qh1#
    • 1...Bf4
      • 2.Qh1#
    • 1...Bg5
      • 2.Qh1#
    • 1...Sf5
      • 2.Qxe8#
    • 1...Sh5
      • 2.Qxe8#
    • 1...Sxe6
      • 2.Qxe8#
    • 1...Sd6
      • 2.Sd8#
    • 1...Sf6
      • 2.Qa8#
  • Tries
    • 1.Kf1?
      • threat
        • 2.Bf3#
      • 1...Sxe6
        • 2.Qxe8#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sf6
        • 2.Qa8#
      • 1...Rc1!
    • 1.Kf2?
      • threat
        • 2.Bf3#
      • 1...Rc2+
        • 2.Rxc2#
      • 1...Sxe6
        • 2.Qxe8#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sf6
        • 2.Qa8#
      • 1...Be3+!
    • 1.Bc2?
      • 1...Rxc2+
        • 2.Rxc2#
      • 1...Rxa4
        • 2.Bxa4#
      • 1...Sxe6
        • 2.Qxe8#
      • 1...Rb4
        • 2.Rc5#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Bc1
        • 2.Qh1#
      • 1...Bd2
        • 2.Qh1#
      • 1...Be3
        • 2.Qh1#
      • 1...Bf4
        • 2.Qh1#
      • 1...Bg5
        • 2.Qh1#
      • 1...Sf5
        • 2.Qxe8#
      • 1...Sh5
        • 2.Qxe8#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sf6
        • 2.Qa8#
      • 1...Rc3!
    • 1.Qf8?
      • threat
        • 2.Sd8#
      • 1...Rc2+
        • 2.Rxc2#
      • 1...Sxe6
        • 2.Qxe8#
      • 1...Bg5!
    • 1.dxc4?
      • threat
        • 2.Rc5#
      • 1...Sxe6
        • 2.Qxe8#
      • 1...d3+!
  • Keys
    • 1.Bb3!
      • 1...Rc2+
        • 2.Rxc2#
      • 1...Rxa4
        • 2.Bxa4#
      • 1...Sxe6
        • 2.Qxe8#
      • 1...Rc5
        • 2.Rxc5#
      • 1...Rc1
        • 2.Bd5#
      • 1...Rc3
        • 2.Bd5#
      • 1...Rb4
        • 2.Rc5#
      • 1...Bc1
        • 2.Qh1#
      • 1...Bd2
        • 2.Qh1#
      • 1...Be3
        • 2.Qh1#
      • 1...Bf4
        • 2.Qh1#
      • 1...Bg5
        • 2.Qh1#
      • 1...Sf5
        • 2.Qxe8#
      • 1...Sh5
        • 2.Qxe8#
      • 1...Sd6
        • 2.Sd8#
      • 1...Sf6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,OGATEB::R(B),XR(a)
    • R(a);OGATE,XS(E)::B(A),XR(a)
    • R(a);N_GUARD::R1(F)
    • R(a);N_GUARD::R1(F),XR(a)
    • B(d);OGATE::QAB(J)
    • S(f);N_GUARD::QAB(J),XS(g)
    • S(f);N_GUARD,XP(H)::QAB(J),XS(g)
    • S(g);SBLOCK::S(I)
    • S(g);OGATE::QAB(J)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • B(A)
      • Vars
        • S(f);N_GUARD,XP(H)::QAB(J),XS(g)
        • R(a);N_GUARD::R1(F),XR(a)
        • S(g);SBLOCK::S(I)
        • S(g);OGATE::QAB(J)
      • Refutation
        • R(a);P_PINB(A)
    • Try
      • K(C);P-FLIGHT
      • Threat
        • B(A)
      • Vars
        • R(a);CHECK,OGATEB::R(B),XR(a)
        • S(f);N_GUARD,XP(H)::QAB(J),XS(g)
        • R(a);N_GUARD::R1(F),XR(a)
        • S(g);SBLOCK::S(I)
        • S(g);OGATE::QAB(J)
      • Refutation
        • B(d);CHECK
    • Try
      • B(A);
      • Vars
        • R(a);CHECK,OGATE,XB(A)::R(B),XR(a)
        • R(a);OGATE,XS(E)::B(A),XR(a)
        • S(f);N_GUARD,XP(H)::QAB(J),XS(g)
        • R(a);N_GUARD::R1(F)
        • R(a);N_GUARD::R1(F),XR(a)
        • B(d);OGATE::QAB(J)
        • S(f);N_GUARD::QAB(J),XS(g)
        • S(g);SBLOCK::S(I)
        • S(g);OGATE::QAB(J)
      • Refutation
        • R(a);
    • Try
      • Q(J);
      • Threat
        • S(I)
      • Vars
        • R(a);CHECK,OGATEB::R(B),XR(a)
        • S(f);N_GUARD,XP(H)::QAB(J),XS(g)
      • Refutation
        • B(d);
    • Try
      • P(D);XR(a)
      • Threat
        • R1(F)
      • Vars
        • S(f);N_GUARD,XP(H)::QAB(J),XS(g)
      • Refutation
        • P(b);CHECK
  • Actual
    • B(A);
    • Vars
      • R(a);CHECK,OGATEB::R(B),XR(a)
      • R(a);OGATE,XS(E)::B(A),XR(a)
      • S(f);N_GUARD,XP(H)::QAB(J),XS(g)
      • R(a);N_GUARD::R1(F),XR(a)
      • R(a);OGATE::B(A)
      • R(a);N_GUARD::R1(F)
      • B(d);OGATE::QAB(J)
      • S(f);N_GUARD::QAB(J),XS(g)
      • S(g);SBLOCK::S(I)
      • S(g);OGATE::QAB(J)
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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).