MESON Chess Problem Database

Problem Display
PID: 232528 (2nn4/q2Q3K/Bpp2N2/1pk2p2/PNP1R3/2P5/4b3/3RB1b1 w - - 0 1)

Groth, Reinhard

Freie Presse, 2003

2nn4/q2Q3K/Bpp2N2/1pk2p2/PNP1R3/2P5/4b3/3RB1b1

#2

11 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxa6
      • 2.Sxa6#
      • 2.Qxf5#
    • 1...Qxd7+
      • 2.Sxd7#
    • 1...Qa8
      • 2.Qxf5#
    • 1...Bf2
      • 2.Bxf2#
    • 1...Bh2
      • 2.Bf2#
    • 1...Bxd1
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Bf3
      • 2.Sd3#
    • 1...Bg4
      • 2.Sd3#
    • 1...Bh5
      • 2.Sd3#
    • 1...Se7
      • 2.Qd6#
    • 1...Sb7
      • 2.Qxf5#
      • 2.Qxc6#
    • 1...Sf7
      • 2.Qxc6#
    • 1...bxa4
      • 2.Re5#
    • 1...bxc4
      • 2.Re5#
  • Keys
    • 1.Bxb5!
      • threat
        • 2.Re5#
      • 1...Qxd7+
        • 2.Sxd7#
      • 1...Bxc4
        • 2.Rxc4#
      • 1...fxe4
        • 2.Sxe4#
      • 1...cxb5
        • 2.Rd5#
      • 1...Qb8
        • 2.Sa6#
      • 1...Qc7
        • 2.Sa6#
      • 1...Bh2
        • 2.Bf2#
      • 1...Bd4
        • 2.cxd4#
      • 1...Bf3
        • 2.Sd3#
      • 1...Se7
        • 2.Qd6#
      • 1...Sf7
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 8
  • Sets
    • Q(h);CHECK,XQ(J)::S(I),XQ(h)
    • Q(h);N_PINQ(J)::QAR(J),XP(e)
    • B(a);N_GUARD::B(B),XB(a)
    • B(a);N_GUARD::B(B)
    • B(b);N_GUARD,XR(A)::S(E)
    • B(b);N_GUARD::S(E),XB(b)
    • B(b);N_GUARD::S(E)
    • S(i);N_PINQ(J)::QAB1(J)
    • S(j);N_PINQ(J)::QAR1(J),XP(g)
    • P(c);XP(D)::R(G)
    • P(c);XP(F)::R(G)
  • Actual
    • B(H);XP(c)
    • Threat
      • R(G)
    • Vars
      • Q(h);CHECK,XQ(J)::S(I),XQ(h)
      • B(b);OGATE,XP(F)::R1(G),XB(b)
      • P(e);XR(G)::S(I),XP(e)
      • P(g);N_GUARD,XB(H)::R1(A)
      • Q(h);N_GUARD,N_PINQ(J)::S(E)
      • Q(h);N_GUARD::S(E)
      • B(a);N_GUARD::B(B)
      • B(a);OGATE::P(C),XB(a)
      • B(b);N_GUARD::S(E)
      • S(i);N_PINQ(J)::QAB1(J)
      • S(j);N_PINQ(J)::QAR1(J),XP(g)
HTML5 logo

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).