MESON Chess Problem Database

Problem Display
PID: 141481 (B3Q2r/4B2p/7K/3b4/1PN1kPP1/1pR3Rp/1Nppr3/2nq4 w - - 0 1)

Makaronets, Leonid

Pavlov, Yury A

Probleemblad, 1976

B3Q2r/4B2p/7K/3b4/1PN1kPP1/1pR3Rp/1Nppr3/2nq4

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bc5#
    • 1...Kxf4
      • 2.Bg5#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Rc4#
      • 1...Kd4
        • 2.Bc5#
      • 1...Kxf4
        • 2.Bg5#
      • 1...Qg1!
    • 1.Sd6+?
      • 1...Kxf4
        • 2.Bg5#
      • 1...Kd4!
    • 1.Bd6+?
      • 1...Kd4
        • 2.Bc5#
      • 1...Rxe8!
    • 1.Bf6+?
      • 1...Kxf4
        • 2.Bg5#
      • 1...Rxe8!
    • 1.Bd8+?
      • 1...Kd4
        • 2.Bb6#
      • 1...Kxf4
        • 2.Bg5#
      • 1...Rxe8!
    • 1.Bf8+?
      • 1...Kd4
        • 2.Bc5#
      • 1...Kxf4!
    • 1.Rce3+?
      • 1...Kd4
        • 2.Bc5#
        • 2.Bf6#
        • 2.Qxh8#
      • 1...Kxf4
        • 2.Bg5#
        • 2.Bd6#
      • 1...Rxe3!
    • 1.Qh5?
      • threat
        • 2.Qe5#
      • 1...Kd4
        • 2.Qxd5#
      • 1...Kxf4
        • 2.Qf5#
      • 1...Sd3!
    • 1.Qg6+?
      • 1...Kd4
        • 2.Bc5#
      • 1...Kxf4
        • 2.Bg5#
        • 2.Qf5#
      • 1...hxg6+!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rc4#
      • 1...Kd4
        • 2.Bf6#
      • 1...Kxf4
        • 2.Bd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(h);N_SPINB(i),P-FLIGHT::B(I)
    • K(h);N_SPINB(i),P-FLIGHT,XP(F)::B(I)
  • Tries
    • Try
      • S(E);
      • Threat
        • R(B)
      • Vars
        • K(h);N_SPINB(i),P-FLIGHT::B(I)
        • K(h);N_SPINB(i),P-FLIGHT,XP(F)::B(I)
      • Refutation
        • Q(b);
    • Try
      • S(E);CHECK
      • Vars
        • K(h);N_SPINB(i),P-FLIGHT,XP(F)::B(I)
      • Refutation
        • K(h);N_SPINB(i),P-FLIGHT
    • Try
      • B(I);CHECK
      • Vars
        • K(h);N_SPINB(i),P-FLIGHT::B(I)
      • Refutation
        • R(k);XQ(K)
    • Try
      • B(I);CHECK
      • Vars
        • K(h);N_SPINB(i),P-FLIGHT,XP(F)::B(I)
      • Refutation
        • R(k);XQ(K)
    • Try
      • B(I);CHECK
      • Vars
        • K(h);N_SPINB(i),P-FLIGHT::B(I)
        • K(h);N_SPINB(i),P-FLIGHT,XP(F)::B(I)
      • Refutation
        • R(k);XQ(K)
    • Try
      • B(I);CHECK
      • Vars
        • K(h);N_SPINB(i),P-FLIGHT::B(I)
      • Refutation
        • K(h);N_SPINB(i),P-FLIGHT,XP(F)
    • Try
      • R(B);CHECK
      • Refutation
        • R(e);XR(B)
    • Try
      • Q(K);
      • Threat
        • QAR1(K)
      • Vars
        • K(h);N_SPINB(i),P-FLIGHT::QAR1(K),XB(i)
        • K(h);N_SPINB(i),P-FLIGHT,XP(F)::QAR1(K)
      • Refutation
        • S(a);
    • Try
      • Q(K);CHECK
      • Vars
        • K(h);N_SPINB(i),P-FLIGHT::B(I)
      • Refutation
        • P(j);CHECK,XQ(K)
  • Actual
    • S(E);
    • Threat
      • R(B)
    • Vars
      • K(h);N_SPINB(i),P-FLIGHT::B(I)
      • K(h);N_SPINB(i),P-FLIGHT,XP(F)::B(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).