MESON Chess Problem Database

Problem Display
PID: 174952 (8/2q5/8/2pP2P1/2Pk4/PP2p1R1/2B4Q/K7 w - - 0 1)

Mantelli, Ugo

Nuova Rivista degli Scacchi, 1901

8/2q5/8/2pP2P1/2Pk4/PP2p1R1/2B4Q/K7

#2

9 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rg4#
    • 1...Qa5
      • 2.Qh8#
  • Tries
    • 1.Bb1?
      • threat
        • 2.Qb2#
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke5
        • 2.Rg4#
      • 1...Qa5
        • 2.Qh8#
      • 1...e2!
    • 1.Bf5?
      • threat
        • 2.Qb2#
      • 1...Kc3
        • 2.Qb2#
      • 1...Qa5
        • 2.Qh8#
      • 1...e2
        • 2.Rd3#
      • 1...Ke5!
    • 1.Rg4+?
      • 1...Qf4
        • 2.Qh8#
      • 1...Kc3!
    • 1.Qh8+?
      • 1...Qg7
        • 2.Qxg7#
      • 1...Qe5!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Qb2#
      • 1...Kc3
        • 2.Qb2#
      • 1...Ke5
        • 2.Rg4#
      • 1...Qa5
        • 2.Qh8#
      • 1...e2
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(C)+R(F)
    • Q(d);N_GUARD,P_PINP(D)::QAB(C)
  • Tries
    • Try
      • B(B);
      • Threat
        • QAB(C)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB1(C)
        • K(b);S_FLIGHT::QAB(C)+R(F)
        • Q(d);N_GUARD,P_PINP(D)::QAB(C)
      • Refutation
        • P(a);
    • Try
      • B(B);
      • Threat
        • QAB(C)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::QAB1(C)
        • Q(d);N_GUARD,P_PINP(D)::QAB(C)
        • P(a);OGATE::R1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(F);CHECK
      • Vars
        • Q(d);P_SPINQ(d)::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • Q(d);N_GUARD,P_SPINQ(d)::QAB(C),XQ(d)
      • Refutation
        • Q(d);P_SPINQ(d)
  • Actual
    • B(B);
    • Threat
      • QAB(C)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB1(C)
      • K(b);S_FLIGHT::QAB(C)+R(F)
      • Q(d);N_GUARD,P_PINP(D)::QAB(C)
      • P(a);OGATE::R1(F)
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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).