MESON Chess Problem Database

Problem Display
PID: 276200 (2K2k2/2N4R/4B3/1p2P1N1/4PPpB/3r3P/2nQ2b1/8 w - - 0 1)

Snaider, A

Pat a Mat, 1990

2K2k2/2N4R/4B3/1p2P1N1/4PPpB/3r3P/2nQ2b1/8

#2

11 + 6

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Qd6#
      • 2.Qd8#
    • 1...Rb3
      • 2.Qd6#
      • 2.Qd8#
    • 1...Rc3
      • 2.Qd6#
      • 2.Qd8#
    • 1...Re3
      • 2.Qd6#
      • 2.Qd8#
    • 1...Rf3
      • 2.Qd6#
      • 2.Qd8#
    • 1...Rg3
      • 2.Qd6#
      • 2.Qd8#
    • 1...Rxh3
      • 2.Qd6#
      • 2.Qd8#
    • 1...Rd6
      • 2.Qxd6#
    • 1...Rd8+
      • 2.Qxd8#
    • 1...Sd4
      • 2.Qb4#
  • Tries
    • 1.Sf3?
      • threat
        • 2.Be7#
      • 1...Rd8+
        • 2.Qxd8#
      • 1...Rd7!
    • 1.Re7?
      • threat
        • 2.Sh7#
      • 1...Rd8+
        • 2.Qxd8#
      • 1...Kxe7
        • 2.Sh7#
      • 1...Bxe4!
    • 1.Rh8+?
      • 1...Ke7
        • 2.Sf3#
        • 2.Sf7#
        • 2.Sh7#
        • 2.Re8#
      • 1...Kg7!
    • 1.Qb4+?
      • 1...Rd6
        • 2.Qxd6#
      • 1...Sxb4!
  • Keys
    • 1.Bf7!
      • threat
        • 2.Sge6#
      • 1...Rd8+
        • 2.Qxd8#
      • 1...Ke7
        • 2.Sge6#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Sd4
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE::QAB(A),XR(c)
    • R(c);CHECK,OGATE::QAR2(A),XR(c)
    • S(a);N_GUARD,S_CUTR(c)::QAB(A)
  • Tries
    • Try
      • S(G);
      • Threat
        • B(E)
      • Vars
        • R(c);CHECK,OGATE::QAR2(A),XR(c)
      • Refutation
        • R(c);
    • Try
      • R(J);
      • Threat
        • S(G)
      • Vars
        • R(c);CHECK,OGATE::QAR2(A),XR(c)
        • K(f);S_FLIGHT,XR(J)::B(E)+S(G)
      • Refutation
        • B(b);XP(C)
    • Try
      • R(J);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB(A),XR(c)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • B(H);
    • Threat
      • S(G)
    • Vars
      • R(c);CHECK,OGATE::QAR2(A),XR(c)
      • K(f);S_FLIGHT::B(E)+S(G)
      • R(c);OGATE::QAB(A),XR(c)
      • S(a);N_GUARD,S_CUTR(c)::QAB(A)
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).