MESON Chess Problem Database

Problem Display
PID: 278196 (1K6/B1p5/4RNB1/b1n1p1r1/R1nk4/1Q3p2/1qrP4/2N4b w - - 0 1)

Amirov, Talip Khasanovich

Cresswell, James E

Stella Polaris, 1972

1K6/B1p5/4RNB1/b1n1p1r1/R1nk4/1Q3p2/1qrP4/2N4b

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Qd3#
      • 2.Qe3#
    • 1...Qxc1
      • 2.Qd3#
      • 2.Qe3#
    • 1...Qa2
      • 2.Qd3#
      • 2.Qe3#
    • 1...Qxb3+
      • 2.Sxb3#
    • 1...Rxd2
      • 2.Rxc4#
    • 1...Bc3
      • 2.Rxc4#
    • 1...Bb4
      • 2.Qd3#
    • 1...Bb6
      • 2.Qe3#
    • 1...f2
      • 2.Se2#
    • 1...e4
      • 2.Rxe4#
    • 1...c6
      • 2.Rd6#
  • Tries
    • 1.Re8?
      • threat
        • 2.Rd8#
      • 1...Qxb3+
        • 2.Sxb3#
      • 1...Bb4
        • 2.Qd3#
      • 1...Bb6
        • 2.Qe3#
      • 1...f2
        • 2.Se2#
      • 1...e4
        • 2.Rxe4#
      • 1...c6!
    • 1.Qxb2+?
      • 1...Rc3
        • 2.Sb3#
      • 1...Bc3
        • 2.Sb3#
      • 1...Rxb2+!
  • Keys
    • 1.Re7!
      • threat
        • 2.Rd7#
      • 1...Qxb3+
        • 2.Sxb3#
      • 1...Bb4
        • 2.Qd3#
      • 1...Bb6
        • 2.Qe3#
      • 1...f2
        • 2.Se2#
      • 1...e4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(b);CHECK,XQ(C)::S(A),XQ(b)
    • R(c);N_GUARD,XP(B)::R1(D),XS(e)
    • B(g);S_CUTR(c)::R1(D),XS(e)
    • B(g);N_PINQ(C),N_SPINS(e),P_SPINS(h)::QAR1(C)
    • B(g);N_PINQ(C)::QAB1(C)
    • P(d);N_GUARD::S(A)
    • P(i);OGATE::R1(E),XP(i)
    • P(k);N_GUARD::R(E)
  • Tries
    • Try
      • R(E);
      • Threat
        • R(E)
      • Vars
        • Q(b);CHECK,XQ(C)::S(A),XQ(b)
        • B(g);N_PINQ(C),N_SPINS(e),P_SPINS(h)::QAR1(C)
        • B(g);N_PINQ(C)::QAB1(C)
        • P(d);N_GUARD::S(A)
        • P(i);OGATE::R1(E),XP(i)
      • Refutation
        • P(k);
    • Try
      • Q(C);CHECK,N_SPINQ(C),XQ(b)
      • Vars
        • R(c);P_SPINR(c)::S(A)
        • B(g);P_SPINB(g)::S(A)
      • Refutation
        • R(c);CHECK,XQ(C)
  • Actual
    • R(E);
    • Threat
      • R(E)
    • Vars
      • Q(b);CHECK,XQ(C)::S(A),XQ(b)
      • B(g);N_PINQ(C),N_SPINS(e),P_SPINS(h)::QAR1(C)
      • B(g);N_PINQ(C)::QAB1(C)
      • P(d);N_GUARD::S(A)
      • P(i);OGATE::R1(E),XP(i)
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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).