MESON Chess Problem Database

Problem Display
PID: 91461 (Q7/1NpK3b/1p3P2/1p1k1P1R/1R4N1/5p2/5qn1/2n3B1 w - - 0 1)

Tuseyev, Aleksandr

Probleemblad, 1987

Q7/1NpK3b/1p3P2/1p1k1P1R/1R4N1/5p2/5qn1/2n3B1

#2

9 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qe1
      • 2.Rd4#
    • 1...Qg3
      • 2.Rd4#
    • 1...Qd4
      • 2.Rxd4#
    • 1...Qh4
      • 2.Rd4#
    • 1...Qf1
      • 2.Rd4#
    • 1...Qa2
      • 2.Rd4#
    • 1...Qc2
      • 2.Rd4#
    • 1...Qe2
      • 2.Rd4#
    • 1...Bxf5+
      • 2.Rxf5#
    • 1...Bg6
      • 2.fxg6#
    • 1...Bg8
      • 2.Qxg8#
    • 1...Se2
      • 2.Qa2#
    • 1...c5
      • 2.Sa5#
      • 2.Sd6#
      • 2.Sd8#
  • Tries
    • 1.Sa5+?
      • 1...c6
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Sc5+?
      • 1...c6
        • 2.Qxc6#
      • 1...Kxc5!
    • 1.Sd6+?
      • 1...c6
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Sd8+?
      • 1...c6
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Qa2+?
      • 1...Qxa2
        • 2.Rd4#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sxa2!
    • 1.Qd8?
      • threat
        • 2.Kxc7#
      • 1...Bxf5+
        • 2.Rxf5#
      • 1...Qd4
        • 2.Rxd4#
      • 1...Qg3
        • 2.Rd4#
      • 1...Qc2
        • 2.Rd4#
      • 1...c5
        • 2.Kc7#
      • 1...c6
        • 2.Kc7#
        • 2.Ke7#
        • 2.Kc8#
        • 2.Ke8#
      • 1...Qc5!
    • 1.Qe8?
      • threat
        • 2.Qf7#
        • 2.Qe4#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Bxf5+
        • 2.Rxf5#
        • 2.Qe6#
      • 1...Qe1
        • 2.Rd4#
      • 1...Qg3
        • 2.Rd4#
        • 2.Qf7#
        • 2.Qe4#
        • 2.Qe6#
      • 1...Qd4
        • 2.Rxd4#
        • 2.Qe6#
      • 1...Qb2
        • 2.Qf7#
        • 2.Qe4#
        • 2.Qe6#
      • 1...Qc2
        • 2.Rd4#
        • 2.Qf7#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Qe2
        • 2.Rd4#
      • 1...Bg6
        • 2.Qe4#
        • 2.Qe5#
        • 2.Qe6#
        • 2.fxg6#
      • 1...Bg8
        • 2.Qe4#
        • 2.Qe5#
        • 2.Qxg8#
      • 1...Sd3
        • 2.Qf7#
        • 2.Qe4#
        • 2.Qe6#
      • 1...Sf4
        • 2.Qe4#
        • 2.Qe5#
      • 1...Qe3!
  • Keys
    • 1.Kxc7!
      • threat
        • 2.Qd8#
      • 1...Qg3+
        • 2.Sd6#
      • 1...Qc5+
        • 2.Sxc5#
      • 1...Qc2+
        • 2.Sc5#
      • 1...Bxf5
        • 2.Qg8#
      • 1...Qd4
        • 2.Rxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::R1(B)
    • Q(b);N_GUARD::R1(B),XQ(b)
    • B(i);CHECK,OGATE,P_SPINB(i),XP(D)::R(E),XB(i)
    • B(i);OGATE::R(E)+P(D),XB(i)
    • B(i);N_GUARD::QAB(I),XB(i)
    • S(a);N_GUARD,S_CUTQ(b)::QAB(I)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB1(I),XP(h)
      • Refutation
        • K(f);P-FLIGHT,P_SPINQ(b)
    • Try
      • S(G);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB1(I),XP(h)
      • Refutation
        • K(f);P-FLIGHT,P_SPINQ(b),XS(G)
    • Try
      • S(G);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB1(I),XP(h)
      • Refutation
        • K(f);P-FLIGHT,P_SPINQ(b)
    • Try
      • S(G);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB1(I),XP(h)
      • Refutation
        • K(f);P-FLIGHT,P_SPINQ(b)
    • Try
      • Q(I);CHECK
      • Vars
        • Q(b);XQ(I)::R1(B)
        • S(a);N_GUARD,P_SPINS(a)::QAB(I),XS(a)
      • Refutation
        • S(a);XQ(I)
    • Try
      • Q(I);
      • Threat
        • QAR(I)+K(H),XP(h)
      • Vars
        • B(i);CHECK,OGATE,P_SPINB(i),XP(D)::R(E),XB(i)
        • Q(b);N_GUARD::R1(B),XQ(b)
        • Q(b);N_GUARD::R1(B)
        • P(h);::QAR(I)+K(H)
      • Refutation
        • Q(b);
    • Try
      • Q(I);
      • Threat
        • DUALS(4)
      • Vars
        • Q(b);N_GUARD::R1(B)
      • Refutation
        • Q(b);
  • Actual
    • K(H);P-FLIGHT,XP(h)
    • Threat
      • QAR(I)
    • Vars
      • Q(b);CHECK::QAB(I)+S(G)
      • Q(b);CHECK::QAB(I)+S(G),XQ(b)
      • B(i);N_GUARD,P_SPINB(i),XP(D)::QAB(I)
      • Q(b);N_GUARD::R1(B),XQ(b)
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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).