MESON Chess Problem Database

Problem Display
PID: 116171 (5R2/3rP3/1pQNpn2/1Np1k1p1/Rn4P1/4B2b/3K4/7B w - - 0 1)

Goldschmidt, Josef

Al Hamishmar, 1950

5R2/3rP3/1pQNpn2/1Np1k1p1/Rn4P1/4B2b/3K4/7B

#2

10 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6+
      • 2.Qxd6#
    • 1...Ra7
      • 2.Sc4#
      • 2.Sf7#
    • 1...Rb7
      • 2.Sc4#
      • 2.Sf7#
    • 1...Rc7
      • 2.Sc4#
      • 2.Sf7#
    • 1...Rxe7
      • 2.Sc4#
    • 1...Sd3
      • 2.Sc4#
      • 2.Sf7#
    • 1...Sbd5
      • 2.Sc4#
      • 2.Sf7#
    • 1...Se4+
      • 2.Qxe4#
    • 1...Sxg4
      • 2.Qe4#
    • 1...Sfd5
      • 2.Sc4#
    • 1...Sh5
      • 2.Qe4#
    • 1...Sh7
      • 2.Qe4#
    • 1...Se8
      • 2.Qe4#
    • 1...Sg8
      • 2.Qe4#
  • Tries
    • 1.Bg1?
      • threat
        • 2.Bh2#
      • 1...Rxd6+
        • 2.Qxd6#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Sxg4
        • 2.Qe4#
      • 1...Sd3
        • 2.Sf7#
      • 1...Sbd5
        • 2.Sf7#
      • 1...Sfd5
        • 2.Sc4#
      • 1...Sh5
        • 2.Qe4#
      • 1...Kf4!
    • 1.Bd4+?
      • 1...Kf4
        • 2.Qf3#
      • 1...cxd4!
    • 1.Qd5+?
      • 1...Sbxd5
        • 2.Sc4#
        • 2.Sf7#
      • 1...Sfxd5
        • 2.Sc4#
      • 1...exd5!
    • 1.Qxc5+?
      • 1...Sbd5
        • 2.Sc4#
        • 2.Sf7#
        • 2.Qd4#
      • 1...Sfd5
        • 2.Sc4#
        • 2.Bd4#
        • 2.Qd4#
      • 1...bxc5!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Bg3#
      • 1...Rxd6+
        • 2.Qxd6#
      • 1...Se4+
        • 2.Qxe4#
      • 1...Kf4
        • 2.Qe4#
      • 1...Sd3
        • 2.Sf7#
      • 1...Sbd5
        • 2.Sf7#
      • 1...Sfd5
        • 2.Sc4#
      • 1...Sh5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(i);CHECK,OGATE,XS(H)::QAB1(G),XR(i)
    • R(i);N_PINS(H),XP(I)::S(H)
    • S(h);CHECK,N_GUARD::QAR1(G),XS(h)
    • S(h);N_GUARD,XP(E)::QAR1(G)
    • S(h);N_PINS(H)::S(H)
    • S(h);N_GUARD::QAR1(G)
  • Tries
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • R(i);CHECK,OGATE,XS(H)::QAB1(G),XR(i)
        • S(h);CHECK,N_GUARD::QAR1(G),XS(h)
        • S(h);N_GUARD,XP(E)::QAR1(G)
        • S(b);N_PINS(H)::S(H)
        • S(h);N_PINS(H)::S(H)
        • S(h);N_GUARD::QAR1(G)
      • Refutation
        • K(d);P_SPINS(b),S_FLIGHT
    • Try
      • B(C);CHECK,N_SPINS(H)
      • Vars
        • K(d);P_SPINS(h),S_FLIGHT::QAR1(G)
      • Refutation
        • P(c);XB(C)
    • Try
      • Q(G);CHECK,N_SPINS(H)
      • Vars
        • S(h);XQ(G)::S(H)
      • Refutation
        • P(g);XQ(G)
    • Try
      • Q(G);CHECK,XP(c)
      • Refutation
        • P(f);XQ(G)
  • Actual
    • B(C);
    • Threat
      • B(C)
    • Vars
      • R(i);CHECK,OGATE,XS(H)::QAB1(G),XR(i)
      • S(h);CHECK,N_GUARD::QAR1(G),XS(h)
      • K(d);P_SPINS(b),S_FLIGHT::QAR1(G)
      • S(b);N_PINS(H)::S(H)
      • S(h);N_PINS(H)::S(H)
      • S(h);N_GUARD::QAR1(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).