MESON Chess Problem Database

Problem Display
PID: 265947 (3Q4/5Bp1/3P4/3Rb1P1/3pkp2/RN3p1P/2pp1K2/3b4 w - - 0 1)

Vaulin, Evgeny A

2nd Prize, Buletin Problemistic, 1994

3Q4/5Bp1/3P4/3Rb1P1/3pkp2/RN3p1P/2pp1K2/3b4

#2

9 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxd6
      • 2.Sxd2#
    • 1...Bf6
      • 2.Sxd2#
      • 2.Sc5#
  • Tries
    • 1.Raa5?
      • threat
        • 2.Bg6#
      • 1...Kf5
        • 2.Rxe5#
      • 1...g6
        • 2.Bxg6#
      • 1...Kd3!
    • 1.Rda5?
      • threat
        • 2.Bg6#
      • 1...Kd3
        • 2.Sc5#
      • 1...g6
        • 2.Bxg6#
      • 1...Kf5!
    • 1.Rb5?
      • threat
        • 2.Bg6#
      • 1...Kd3
        • 2.Sc5#
      • 1...g6
        • 2.Bxg6#
      • 1...Kf5!
    • 1.Rc5?
      • threat
        • 2.Bg6#
      • 1...Kd3
        • 2.Bg6#
      • 1...g6
        • 2.Bxg6#
      • 1...Kf5!
    • 1.Rxe5+?
      • 1...Kd3
        • 2.Sa1#
        • 2.Sc1#
        • 2.Sa5#
        • 2.Sc5#
      • 1...Kxe5!
    • 1.Qc8?
      • threat
        • 2.Sxd2#
        • 2.Sc5#
      • 1...Kd3
        • 2.Bg6#
      • 1...Bxd6
        • 2.Sxd2#
        • 2.Qf5#
      • 1...c1B
        • 2.Sc5#
      • 1...c1R
        • 2.Sxd2#
      • 1...c1Q!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Bg6#
      • 1...Kd3
        • 2.Sxd2#
      • 1...Kf5
        • 2.Rxe5#
      • 1...g6
        • 2.Bxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(h);XP(G)::S(C),XP(c)
  • Tries
    • Try
      • R(B);
      • Threat
        • B(H)
      • Vars
        • K(f);N_GUARD,P_SPINB(h),S_FLIGHT::R1(E),XB(h)
        • P(i);::B(H),XP(i)
      • Refutation
        • K(f);P_SPINP(e),S_FLIGHT
    • Try
      • R(E);
      • Threat
        • B(H)
      • Vars
        • K(f);N_GUARD,S_FLIGHT::R(B)+S(C),DCHECK
        • P(i);::B(H),XP(i)
      • Refutation
        • K(f);P_SPINB(h),S_FLIGHT
    • Try
      • R(E);
      • Threat
        • B(H)
      • Vars
        • K(f);N_GUARD,S_FLIGHT::R(B)+S(C),DCHECK
        • P(i);::B(H),XP(i)
      • Refutation
        • K(f);P_SPINB(h),S_FLIGHT
    • Try
      • R(E);
      • Threat
        • B(H)
      • Vars
        • K(f);S_FLIGHT::B(H)
        • P(i);::B(H),XP(i)
      • Refutation
        • K(f);P_SPINB(h),S_FLIGHT
    • Try
      • R(E);CHECK,XB(h)
      • Refutation
        • K(f);P-FLIGHT,XR(E)
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • K(f);N_GUARD,P_SPINP(e),S_FLIGHT::B(H)
        • P(b);::S(C)
        • P(b);::S(C),XP(c)
      • Refutation
        • P(b);
  • Actual
    • Q(I);
    • Threat
      • B(H)
    • Vars
      • K(f);N_GUARD,P_SPINP(e),S_FLIGHT::R(B)+S(C),XP(c)
      • K(f);N_GUARD,P_SPINB(h),S_FLIGHT::R1(E),XB(h)
      • P(i);::B(H),XP(i)
HTML5 logo

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).