MESON Chess Problem Database

Problem Display
PID: 263063 (6b1/2KBp1q1/N2PP1p1/1ppkP3/nR4pN/6Qp/1pP5/6B1 w - - 0 1)

Murashev, Pavel Aleksandrovich

3rd Prize, SuperProblem, 2018

6b1/2KBp1q1/N2PP1p1/1ppkP3/nR4pN/6Qp/1pP5/6B1

#2

11 + 11

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe6
      • 2.Bc6#
  • Tries
    • 1.Sxc5?
      • threat
        • 2.Bc6#
      • 1...Sxc5
        • 2.Rd4#
      • 1...exd6!
    • 1.Bh2?
      • threat
        • 2.Qd3#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...c4!
    • 1.Bxc5?
      • threat
        • 2.Rd4#
      • 1...Qxe5
        • 2.Qb3#
      • 1...Sxc5!
    • 1.Qe3?
      • threat
        • 2.Qe4#
      • 1...cxb4
        • 2.Qd4#
      • 1...Sc3
        • 2.Qxc5#
      • 1...c4
        • 2.Qd4#
      • 1...Qxe5!
    • 1.Qxg4?
      • threat
        • 2.Qe4#
      • 1...Kxe5
        • 2.Qg5#
      • 1...Qxe5
        • 2.Bc6#
      • 1...cxb4
        • 2.Qd4#
      • 1...c4
        • 2.Qd4#
      • 1...Sc3!
    • 1.c4+?
      • 1...Ke4
        • 2.Bc6#
        • 2.Qe3#
      • 1...bxc4!
  • Keys
    • 1.Re4!
      • threat
        • 2.Qd3#
      • 1...Kxe4
        • 2.Bc6#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...c4
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(k);SBLOCK,XP(I)::B(K)
  • Tries
    • Try
      • S(G);XP(f)
      • Threat
        • B(K)
      • Vars
        • S(c);SBLOCK,XS(G)::R1(D)
      • Refutation
        • P(i);P_PINB(K),XP(H)
    • Try
      • B(A);
      • Threat
        • QAR2(C)
      • Vars
        • Q(j);OGATE,P_PINP(H),XP(F)::QAR1(C),XQ(j)
      • Refutation
        • P(f);
    • Try
      • B(A);XP(f)
      • Threat
        • R1(D)
      • Vars
        • Q(j);P_PINP(H),SBLOCK,XP(F)::QAB(C)
      • Refutation
        • S(c);XB(A)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • P(f);N_GUARD,XR(D)::QAR1(C)
        • S(c);N_GUARD::QAR1(C),XP(f)
        • P(f);N_GUARD::QAR1(C)
      • Refutation
        • Q(j);P_PINP(H),XP(F)
    • Try
      • Q(C);XP(d)
      • Threat
        • QAB1(C)
      • Vars
        • K(g);OGATEB,P-FLIGHT,XP(F)::QAR2(C)
        • Q(j);P_PINP(H),SBLOCK,XP(F)::B(K)
        • P(f);N_GUARD,XR(D)::QAR1(C)
        • P(f);N_GUARD::QAR1(C)
      • Refutation
        • S(c);
    • Try
      • P(B);CHECK
      • Refutation
        • P(e);XP(B)
  • Actual
    • R(D);
    • Threat
      • QAR2(C)
    • Vars
      • K(g);N_GUARD,S_FLIGHT,XR(D)::B(K)
      • Q(j);OGATE,P_PINP(H),XP(F)::QAR1(C),XQ(j)
      • P(f);N_GUARD::R1(D)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).