MESON Chess Problem Database

Problem Display
PID: 195790 (1B1n2bb/5p1R/K1kP3R/2N3p1/1P2P1P1/n2p1N1q/3Q4/8 w - - 0 1)

Cioflanca, Mihalu

Sachmatija, 2019

1B1n2bb/5p1R/K1kP3R/2N3p1/1P2P1P1/n2p1N1q/3Q4/8

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bd4
      • 2.Sxd4#
    • 1...Be5
      • 2.Sxe5#
    • 1...f5
      • 2.Rc7#
    • 1...f6
      • 2.Sd4#
  • Tries
    • 1.Rxh8?
      • threat
        • 2.Sd4#
        • 2.Se5#
      • 1...Qh2
        • 2.Sd4#
      • 1...Qg3
        • 2.Sd4#
      • 1...Sc2
        • 2.Se5#
      • 1...Sc4
        • 2.Sd4#
      • 1...Sb5
        • 2.Se5#
      • 1...Se6
        • 2.Se5#
      • 1...f6
        • 2.Sd4#
      • 1...Qxf3!
    • 1.Qxg5?
      • threat
        • 2.Qd5#
      • 1...Be5
        • 2.Sxe5#
      • 1...f5
        • 2.Rc7#
      • 1...f6
        • 2.Sd4#
      • 1...Qh5!
    • 1.Qxd3?
      • threat
        • 2.Qd5#
      • 1...Bd4
        • 2.Sxd4#
      • 1...f5
        • 2.Rc7#
      • 1...f6
        • 2.Sd4#
        • 2.Rc7#
      • 1...Qf1!
    • 1.d7+?
      • 1...Bf6
        • 2.Sd4#
        • 2.Se5#
      • 1...Se6
        • 2.d8S#
      • 1...f6
        • 2.Sd4#
        • 2.Se5#
      • 1...Qxh6!
  • Keys
    • 1.Qa2!
      • threat
        • 2.Qd5#
      • 1...Sc4
        • 2.Qa4#
      • 1...f5
        • 2.Rc7#
      • 1...f6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(i);N_GUARD::S(B),XB(i)
    • P(f);OGATE::R1(J)
    • P(f);S_CUTB(i)::S(B)
  • Tries
    • Try
      • R(J);XB(i)
      • Threat
        • DUALS(2)
      • Vars
        • Q(c);::S(B)
        • S(a);::S(B)
        • S(g);::S(B)
        • P(f);::S(B)
      • Refutation
        • Q(c);XS(B)
    • Try
      • Q(A);XP(d)
      • Threat
        • QAB1(A)
      • Vars
        • B(i);N_GUARD::S(B),XB(i)
        • P(f);OGATE::R1(J)
        • P(f);S_CUTB(i)::S(B)
      • Refutation
        • Q(c);
    • Try
      • Q(A);XP(b)
      • Threat
        • QAB1(A)
      • Vars
        • B(i);N_GUARD::S(B),XB(i)
        • P(f);OGATE::R1(J)
      • Refutation
        • Q(c);P_PINQ(A)
    • Try
      • P(H);CHECK
      • Vars
        • S(g);OGATE,P_SPINS(g)::P=S
      • Refutation
        • Q(c);XR(I)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • S(a);OGATE::QAB(A)
      • P(f);OGATE::R1(J)
      • P(f);S_CUTB(i)::S(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).