MESON Chess Problem Database

Problem Display
PID: 271049 (B3N3/2r1p2n/1Nr4P/2p1k1qR/5bQB/1pP1pRp1/b3K3/7n w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Schakend Nederland, 1967

B3N3/2r1p2n/1Nr4P/2p1k1qR/5bQB/1pP1pRp1/b3K3/7n

#2

10 + 13

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Rxe3#
    • 1...Qf5
      • 2.Qxf5#
    • 1...Rd6
      • 2.Sc4#
    • 1...Re6
      • 2.Sc4#
      • 2.Qxf4#
    • 1...Rf6
      • 2.Sc4#
    • 1...Rg6
      • 2.Sc4#
    • 1...Rxh6
      • 2.Sc4#
    • 1...e6
      • 2.Qxf4#
  • Tries
    • 1.Rxg5+?
      • 1...Ke4
        • 2.Rxe3#
        • 2.Rxf4#
        • 2.Qf5#
        • 2.Qxf4#
      • 1...Bxg5
        • 2.Qf5#
      • 1...Sxg5!
  • Keys
    • 1.Sg7!
      • threat
        • 2.Qxf4#
      • 1...Ke4
        • 2.Rxe3#
      • 1...Kd6
        • 2.Qe6#
      • 1...Kf6
        • 2.Qf5#
      • 1...Rf6
        • 2.Sc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • K(h);N_SPINQ(i),P-FLIGHT,P_SPINB(f),P_SPINR(j)::R1(C),XP(d)
    • Q(i);N_GUARD::QAR1(D),XQ(i)
    • R(j);::S(G)
    • R(j);XP(H)::S(G)
    • P(l);SBLOCK::QAB1(D),XB(f)
  • Tries
    • Try
      • R(F);CHECK,XQ(i)
      • Vars
        • B(f);XR(F)::QAR1(D)
      • Refutation
        • S(m);XR(F)
  • Actual
    • S(J);
    • Threat
      • QAB1(D),XB(f)
    • Vars
      • K(h);N_GUARD,N_SPINQ(i),P-FLIGHT,P_SPINB(f),P_SPINR(j)::R1(C),XP(d)
      • K(h);N_SPINQ(i),S_CUTR(j),S_FLIGHT::QAR1(D)
      • K(h);N_GUARD,P_SPINB(f),S_FLIGHT::QAR1(D)
      • R(j);SBLOCK::S(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).