MESON Chess Problem Database

Problem Display
PID: 189926 (8/3K4/8/2pRp1P1/2p1k1pP/1pP3P1/1P2P3/3Q4 w - - 0 1)

Hody, Janos

Magyar Sakkujsag, 1912

8/3K4/8/2pRp1P1/2p1k1pP/1pP3P1/1P2P3/3Q4

#2

9 + 6

6490 yacpdb 2019
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qb1#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Rxe5#
      • 1...Kf5
        • 2.Qb1#
      • 1...Ke3!
    • 1.Ke7?
      • 1...Kf5
        • 2.Qb1#
      • 1...Ke3!
    • 1.Rd3?
      • 1...cxd3
        • 2.Qxd3#
      • 1...Kf5!
    • 1.Rxc5?
      • 1...Kf5
        • 2.Qb1#
      • 1...Ke3!
    • 1.Qa1?
      • 1...Kxd5
        • 2.Qa8#
      • 1...Kf5
        • 2.Qb1#
      • 1...Ke3!
    • 1.Qb1+?
      • 1...Kxd5
        • 2.e4#
      • 1...Ke3!
    • 1.Qc1?
      • 1...Kf5
        • 2.Qb1#
      • 1...Kxd5!
    • 1.Qg1?
      • 1...Kf5
        • 2.Qb1#
      • 1...Kxd5!
    • 1.Qh1+?
      • 1...Kf5
        • 2.Qb1#
      • 1...Ke3!
    • 1.e3?
      • 1...Kf5
        • 2.Qb1#
      • 1...Kxe3!
  • Keys
    • 1.Qe1!
      • 1...Ke3
        • 2.Rxe5#
      • 1...Kxd5
        • 2.e4#
      • 1...Kf5
        • 2.Qb1#

This anticipates 92286(1921)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(I);P-FLIGHT
      • Threat
        • R1(G),XP(f)
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • K(I);P-FLIGHT
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(G);
      • Vars
        • P(b);OGATE,XR(G)::QAB1(A),XP(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(G);XP(e)
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);OGATEB,S_FLIGHT,XR(G)::QAB(A)
        • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT,XR(G)::P(C)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
      • Refutation
        • K(c);S_FLIGHT,XR(G)
    • Try
      • Q(A);
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
      • Refutation
        • K(c);S_FLIGHT,XR(G)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(C);
      • Vars
        • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
      • Refutation
        • K(c);P-FLIGHT,XP(C)
  • Actual
    • Q(A);
    • Vars
      • K(c);P-FLIGHT::R(G),XP(f)
      • K(c);OGATE,S_FLIGHT,XR(G)::P(C)
      • K(c);P_SPINP(f),S_FLIGHT::QAB(A)
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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).