MESON Chess Problem Database

Problem Display
PID: 277897 (2NKR1b1/8/1pN2p2/1P1k4/1P6/6r1/6nB/5Qb1 w - - 0 1)

Gavrilov, Constantin Grigorievich

Schackvarlden, 1938

2NKR1b1/8/1pN2p2/1P1k4/1P6/6r1/6nB/5Qb1

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sxb6#
    • 1...Se3
      • 2.Qd3#
    • 1...f5
      • 2.Re5#
  • Tries
    • 1.Qd3+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Rxd3!
    • 1.Qf3+?
      • 1...Kc4
        • 2.Sd6#
      • 1...Rxf3!
  • Keys
    • 1.Qe2!
      • threat
        • 2.Qe4#
      • 1...Re3
        • 2.Sxb6#
      • 1...Rg4
        • 2.S8e7#
      • 1...Be3
        • 2.Qa2#
      • 1...Bd4
        • 2.S6e7#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bh7
        • 2.Qe6#
      • 1...Se3
        • 2.Qd3#
      • 1...f5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(c);S_CUTB(a)::S(F),XP(e)
    • S(b);S_CUTB(a),S_CUTR(c)::QAR2(A)
    • P(f);N_GUARD::R1(H)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • R(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);N_GUARD,S_CUTR(c),S_FLIGHT::S(F)
      • Refutation
        • R(c);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • R(c);S_CUTB(a)::S(F),XP(e)
      • R(c);::S(F)
      • B(a);S_CUTR(c)::QAB(A)
      • B(a);SBLOCK::S(E)
      • B(g);N_GUARD::QAB1(A),XB(g)
      • B(g);N_GUARD::QAB1(A)
      • S(b);S_CUTB(a),S_CUTR(c)::QAR2(A)
      • P(f);N_GUARD::R1(H)
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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).