MESON Chess Problem Database

Problem Display
PID: 174815 (8/3pb2N/2P4R/3kp3/KP2p3/n3P2B/N2p2q1/2QR4 w - - 0 1)

Barth, Michael

Freie Presse, 1989

8/3pb2N/2P4R/3kp3/KP2p3/n3P2B/N2p2q1/2QR4

#2

10 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qh1
      • 2.Rxd2#
    • 1...Qf3
      • 2.Rxd2#
    • 1...Qxh3
      • 2.Rxd2#
    • 1...Qg1
      • 2.Rxd2#
    • 1...Qg3
      • 2.Rxd2#
    • 1...Qg4
      • 2.Rxd2#
    • 1...Qg5
      • 2.Rxd2#
    • 1...Qg6
      • 2.Rxd2#
    • 1...Qg7
      • 2.Rxd2#
    • 1...Qg8
      • 2.Rxd2#
    • 1...Bxb4
      • 2.Sxb4#
    • 1...Bh4
      • 2.Qc5#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Bg5
      • 2.Qc5#
    • 1...Bd6
      • 2.Sf6#
    • 1...Bf6
      • 2.Qc5#
    • 1...Bd8
      • 2.Qc5#
    • 1...Sc4
      • 2.Sc3#
    • 1...dxc6
      • 2.Qxc6#
    • 1...d6
      • 2.Be6#
  • Tries
    • 1.Sf6+?
      • 1...Bxf6
        • 2.Qc5#
      • 1...Kd6!
    • 1.Rd6+?
      • 1...Bxd6
        • 2.Sf6#
      • 1...Kxd6!
    • 1.Qxd2+?
      • 1...Kc4
        • 2.Qc3#
        • 2.Qd5#
      • 1...Qxd2!
    • 1.Qc4+?
      • 1...Sxc4
        • 2.Sc3#
      • 1...Kxc4!
    • 1.cxd7?
      • threat
        • 2.Qc6#
      • 1...Qg6
        • 2.Rxd2#
      • 1...Bf6
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bd6
        • 2.Sf6#
        • 2.Be6#
      • 1...Sc4
        • 2.Sc3#
      • 1...Sc2!
  • Keys
    • 1.Kb3!
      • threat
        • 2.Sc3#
      • 1...Bxb4
        • 2.Sxb4#
      • 1...Qg6
        • 2.Rxd2#
      • 1...Bf6
        • 2.Qc5#
      • 1...Bd6
        • 2.Sf6#
      • 1...Sb1
        • 2.Qc4#
      • 1...Sb5
        • 2.Qc4#
      • 1...d6
        • 2.Be6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 15
  • Sets
    • Q(b);N_GUARD::R(B),XP(a)
    • Q(b);N_GUARD,XB(E)::R(B),XP(a)
    • B(h);XP(G)::S(C),XB(h)
    • B(h);N_GUARD::QAR1(A)
    • B(h);N_GUARD::QAR1(A),XB(h)
    • B(h);N_GUARD,SBLOCK::S(J)
    • S(c);SBLOCK::S(C)
    • P(g);OGATE,XP(H)::QAB1(A),XP(g)
    • P(g);N_GUARD,SBLOCK::B(E)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • B(h);XS(J)::QAR1(A)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(I);CHECK
      • Vars
        • B(h);SBLOCK,XR(I)::S(J)
      • Refutation
        • K(e);P-FLIGHT,XR(I)
    • Try
      • Q(A);CHECK,XP(a)
      • Refutation
        • Q(b);P_SPINQ(b),XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • S(c);SBLOCK,XQ(A)::S(C)
      • Refutation
        • K(e);N_SPINP(a),S_FLIGHT,XQ(A)
    • Try
      • P(H);XP(g)
      • Threat
        • QAB1(A)
      • Vars
        • Q(b);N_GUARD::R(B),XP(a)
        • B(h);N_GUARD::QAR1(A)
        • B(h);N_GUARD::QAR1(A),XB(h)
        • S(c);SBLOCK::S(C)
      • Refutation
        • S(c);
  • Actual
    • K(F);S_FLIGHT
    • Threat
      • S(C)
    • Vars
      • B(h);XP(G)::S(C),XB(h)
      • Q(b);N_GUARD::R(B),XP(a)
      • B(h);N_GUARD::QAR1(A)
      • B(h);N_GUARD,SBLOCK::S(J)
      • S(c);N_GUARD::QAB1(A)
      • P(g);N_GUARD,SBLOCK::B(E)
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).