MESON Chess Problem Database

Problem Display
PID: 169051 (8/1B3p1q/8/1Kp1P3/3B1pN1/1N1k2p1/R1p3Q1/1b1rr3 w - - 0 1)

Atayants, Grigory Sergeevich

Sp. Prize, SuperProblem 057. TT, 2012

8/1B3p1q/8/1Kp1P3/3B1pN1/1N1k2p1/R1p3Q1/1b1rr3

#2

8 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Qd2#
    • 1...Rd2
      • 2.Qxd2#
    • 1...Rg1
      • 2.Qf3#
    • 1...Rh1
      • 2.Qf3#
    • 1...Rxe5
      • 2.Sxe5#
  • Tries
    • 1.Sf2+?
      • 1...Ke2
        • 2.Bf3#
      • 1...gxf2!
    • 1.Ba1?
      • threat
        • 2.Sxc5#
      • 1...c1Q
        • 2.Qd5#
      • 1...c1R
        • 2.Qd5#
      • 1...Re2
        • 2.Qd5#
      • 1...c4
        • 2.Sc5#
      • 1...Rxe5!
    • 1.Rxc2?
      • threat
        • 2.Rc3#
      • 1...cxd4
        • 2.Sc5#
      • 1...Rc1
        • 2.Rd2#
        • 2.Qd2#
      • 1...Bxc2!
  • Keys
    • 1.Qd5!
      • threat
        • 2.Qc4#
      • 1...Ke2
        • 2.Qf3#
      • 1...c1Q
        • 2.Ba1#
      • 1...c1R
        • 2.Ba1#
      • 1...c4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::QAR1(B)
    • R(b);N_GUARD::QAR1(B),XR(b)
    • R(c);N_GUARD::QAR2(B)
    • R(c);XP(G)::S(E),XR(c)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(e);P_SPINP(d),S_FLIGHT::B(H)
      • Refutation
        • P(f);XS(E)
    • Try
      • B(D);
      • Threat
        • S(C),XP(h)
      • Vars
        • P(d);::QAR2(B)
        • R(c);SBLOCK::QAR2(B)
        • P(h);::S(C)
      • Refutation
        • R(c);XP(G)
    • Try
      • R(A);XP(d)
      • Threat
        • R1(A)
      • Vars
        • P(h);SBLOCK,XB(D)::S(C)
      • Refutation
        • B(a);XR(A)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(e);P_SPINP(d),S_FLIGHT::QAB1(B)
      • P(d);::QAR(B)+B(D)
      • P(h);::QAB1(B),XP(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).