MESON Chess Problem Database

Problem Display
PID: 229271 (8/p7/P3p3/1B1pPp2/1Pp2P2/N1pk1K2/3r4/BR1R4 w - - 0 1)

Schwarz, Bela

Nepszava, 1926

8/p7/P3p3/1B1pPp2/1Pp2P2/N1pk1K2/3r4/BR1R4

#2

10 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rxd2#
    • 1...Rxd1
      • 2.Rxd1#
    • 1...c2
      • 2.Rb3#
    • 1...d4
      • 2.Bxc4#
  • Tries
    • 1.Bxc4+?
      • 1...Kd4
        • 2.Rxd2#
      • 1...dxc4!
    • 1.Rbc1?
      • 1...Kd4
        • 2.Rxd2#
      • 1...Rxd1
        • 2.Rxd1#
      • 1...d4
        • 2.Bxc4#
      • 1...c2!
    • 1.Rb3?
      • 1...Kd4
        • 2.Rxd2#
      • 1...d4
        • 2.Bxc4#
      • 1...Rxd1!
    • 1.Rxd2+?
      • 1...cxd2
        • 2.Rb3#
      • 1...Kxd2!
  • Keys
    • 1.Ba4!
      • 1...Kd4
        • 2.Rxd2#
      • 1...Rxd1
        • 2.Rxd1#
      • 1...c2
        • 2.Bxc2#
      • 1...d4
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINP(d),P-FLIGHT,P_SPINP(b)::R(C),XR(a)
    • R(a);N_SPINR(a),OGATE,XR(C)::R(B),XR(a)
    • P(b);OGATEB::R(B)
    • P(e);N_GUARD,SBLOCK::B(H),XP(d)
  • Tries
    • Try
      • B(H);CHECK,XP(d)
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b)::R(C),XR(a)
      • Refutation
        • P(e);XB(H)
    • Try
      • R(B);
      • Vars
        • K(c);N_SPINP(d),P-FLIGHT,P_SPINP(b)::R(C),XR(a)
        • R(a);N_SPINR(a),OGATE,XR(C)::R(B),XR(a)
        • P(e);N_GUARD,SBLOCK::B(H),XP(d)
      • Refutation
        • P(b);
    • Try
      • R(B);N_PINP(d),P_PINP(b)
      • Vars
        • K(c);P-FLIGHT::R(C),XR(a)
        • P(e);N_GUARD,SBLOCK::B(H),XP(d)
      • Refutation
        • R(a);N_SPINR(a),XR(C)
    • Try
      • R(C);CHECK,XR(a)
      • Vars
        • P(b);SBLOCK,XR(C)::R(B)
      • Refutation
        • K(c);N_SPINP(d),P-FLIGHT,XR(C)
  • Actual
    • B(H);N_PINP(d)
    • Vars
      • K(c);P-FLIGHT,P_SPINP(b)::R(C),XR(a)
      • R(a);N_SPINR(a),OGATE,XR(C)::R(B),XR(a)
      • P(b);::B(H),XP(b)
      • P(e);SBLOCK::B(H)
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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).