MESON Chess Problem Database

Problem Display
PID: 64293 (N6B/3R4/2qp4/3k1Pn1/pPR1b3/N3Pn2/3P3p/3Q1K1B w - - 0 1)

Davis, Henry Hosey

Source?, 0000

N6B/3R4/2qp4/3k1Pn1/pPR1b3/N3Pn2/3P3p/3Q1K1B

#2

12 + 8

187 The Chess Bouquet 1897
3530 Het Half Pin Thema (II) 1947

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Sc7#
    • 1...Qb7
      • 2.Rc5#
    • 1...Qxd7
      • 2.Sb6#
    • 1...Qxa8
      • 2.Rc5#
    • 1...Qc5
      • 2.Rxc5#
    • 1...Qa6
      • 2.Sc7#
    • 1...Qb6
      • 2.Sxb6#
    • 1...Qc7
      • 2.Sxc7#
    • 1...Qc8
      • 2.Sb6#
    • 1...Bb1
      • 2.Rd4#
    • 1...Bc2
      • 2.Rd4#
    • 1...Se1
      • 2.Rd4#
    • 1...Sg1
      • 2.Rd4#
    • 1...Sxd2+
      • 2.Qxd2#
    • 1...Sd4
      • 2.Rxd4#
    • 1...Sh4
      • 2.Rd4#
    • 1...Se5
      • 2.Rd4#
  • Keys
    • 1.Qc2!
      • 1...Qxc4+
        • 2.Qxc4#
      • 1...Bd3+
        • 2.Qxd3#
      • 1...Sxd2+
        • 2.Qxd2#
      • 1...Qxd7
        • 2.Sb6#
      • 1...Qxa8
        • 2.Rc5#
      • 1...Bxc2
        • 2.Rd4#
      • 1...Bxf5
        • 2.Qxf5#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Qb5
        • 2.Sc7#
      • 1...Qb7
        • 2.Rc5#
      • 1...Qa6
        • 2.Sc7#
      • 1...Qb6
        • 2.Sxb6#
      • 1...Qc7
        • 2.Sxc7#
      • 1...Qc8
        • 2.Sb6#
      • 1...Se1
        • 2.Rd4#
      • 1...Sg1
        • 2.Rd4#
        • 2.Qd3#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sh4
        • 2.Rd4#
        • 2.Qd3#
      • 1...Se5
        • 2.Rd4#
      • 1...Sh3
        • 2.Qxe4#
      • 1...Se6
        • 2.Qxe4#
      • 1...Sf7
        • 2.Qxe4#
      • 1...Sh7
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 3
  • Sets
    • Q(g);N_GUARD,P_PINR(H)::S(K)
    • Q(g);N_GUARD::R1(H)
    • Q(g);N_GUARD,N_SPINP(h),XR(J)::S(K)
    • Q(g);N_GUARD,XS(K)::R1(H)
    • Q(g);N_GUARD::R1(H),XQ(g)
    • Q(g);N_GUARD::S(K),XQ(g)
    • Q(g);N_GUARD::S(K)
    • B(d);P_SPINS(b)::R1(H)
    • S(b);N_GUARD,P_SPINB(d)::R1(H)
    • S(b);CHECK,OGATE,P_SPINB(d),P_SPINS(b),XP(D)::QAR(A),XS(b)
    • S(b);N_GUARD,P_SPINB(d)::R1(H),XS(b)
  • Actual
    • Q(A);
    • Vars
      • Q(g);CHECK,OGATE,XR(H)::QAB1(A),XQ(g)
      • B(d);CHECK,N_GUARD,P_SPINS(b)::QAR2(A),XB(d)
      • S(b);CHECK,OGATE,P_SPINB(d),XP(D)::QAR(A),XS(b)
      • Q(g);N_GUARD,N_SPINP(h),XR(J)::S(K)
      • Q(g);N_GUARD,XS(K)::R1(H)
      • B(d);P_SPINS(b),XQ(A)::R1(H)
      • B(d);OGATE,P_SPINS(b),XP(I)::QAR2(A),XB(d)
      • Q(g);N_GUARD::R1(H),XQ(g)
      • Q(g);N_GUARD,P_PINR(H)::S(K)
      • Q(g);N_GUARD::R1(H)
      • Q(g);N_GUARD::S(K),XQ(g)
      • Q(g);N_GUARD::S(K)
      • S(b);N_GUARD,P_SPINB(d)::R1(H)
      • S(b);N_GUARD,P_SPINB(d)::R1(H),XS(b)
      • S(f);N_GUARD::QAB1(A),XB(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).