MESON Chess Problem Database

Problem Display
PID: 64647 (n4R2/1Q6/2KP2p1/1PP1Nb2/3pk3/n1rN3p/2PB4/8 w - - 0 1)

Huse, Hans Markus

1st HM., Good Companions (April), 1916

n4R2/1Q6/2KP2p1/1PP1Nb2/3pk3/n1rN3p/2PB4/8

#2

10 + 8

3132 The Good Companion Two-Mover 1922
70 American Chess Problemist 1950

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5+
      • 2.Kxc5#
    • 1...Bg4
      • 2.Rf4#
    • 1...Be6
      • 2.Rf4#
    • 1...Bd7+
      • 2.Kxd7#
    • 1...Bc8
      • 2.Rf4#
    • 1...Sxb5
      • 2.Kxb5#
    • 1...Sb6
      • 2.Kxb6#
    • 1...Sc7
      • 2.Kxc7#
  • Tries
    • 1.Qxa8?
      • threat
        • 2.Kb6#
        • 2.Kc7#
      • 1...Rxc5+
        • 2.Kxc5#
      • 1...Bd7+
        • 2.Kxd7#
      • 1...Sxb5
        • 2.Kxb5#
        • 2.Kb6#
      • 1...Be6
        • 2.Rf4#
      • 1...Bc8
        • 2.Rf4#
      • 1...Sc4
        • 2.Kc7#
      • 1...Rxd3!
    • 1.Qg7?
      • threat
        • 2.Sf2#
      • 1...Rxc5+
        • 2.Sxc5#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Bd7+!
    • 1.d7?
      • threat
        • 2.Kd6#
      • 1...Rxc5+
        • 2.Kxc5#
      • 1...Bxd7+
        • 2.Kxd7#
      • 1...Sxb5
        • 2.Kxb5#
      • 1...Be6
        • 2.Rf4#
      • 1...Sb6
        • 2.Kxb6#
      • 1...Sc7
        • 2.Kxc7#
      • 1...Sc4!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Sf2#
      • 1...Rxc5+
        • 2.Sxc5#
      • 1...Bd7+
        • 2.Sxd7#
      • 1...Rxd3
        • 2.cxd3#
      • 1...Be6
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(b);CHECK,XP(E)::QAB(I)+K(G),XR(b)
    • B(f);OGATE::R1(J)
    • B(f);CHECK::QAB(I)+K(G),XB(f)
    • S(a);XP(D)::QAB(I)+K(G),XS(a)
    • S(h);::QAB(I)+K(G),XS(h)
  • Tries
    • Try
      • Q(I);XS(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);CHECK,XP(E)::QAB(I)+K(G),XR(b)
        • B(f);CHECK::QAB(I)+K(G),XB(f)
        • B(f);OGATE::R1(J)
        • S(a);N_PINP(E)::QAB(I)+K(G)
      • Refutation
        • R(b);N_PINP(E),XS(C)
    • Try
      • Q(I);
      • Threat
        • S(C)
      • Vars
        • R(b);CHECK,XP(E)::S(C),XR(b)
        • R(b);N_PINP(E),OGATE,XS(C)::P(A),XR(b)
      • Refutation
        • B(f);CHECK
    • Try
      • P(H);
      • Threat
        • QAB(I)+K(G)
      • Vars
        • R(b);CHECK,XP(E)::QAB(I)+K(G),XR(b)
        • B(f);CHECK,XP(H)::QAB(I)+K(G),XB(f)
        • S(a);XP(D)::QAB(I)+K(G),XS(a)
        • B(f);OGATE::R1(J)
        • S(h);::QAB(I)+K(G),XS(h)
      • Refutation
        • S(a);N_PINP(E)
  • Actual
    • Q(I);
    • Threat
      • S(C)
    • Vars
      • R(b);CHECK,XP(E)::S(C),XR(b)
      • B(f);CHECK,N_GUARD::QAR(I)+S(F),XB(f)
      • R(b);N_PINP(E),OGATE,XS(C)::P(A),XR(b)
      • B(f);OGATE::R1(J)
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).