MESON Chess Problem Database

Problem Display
PID: 180366 (R2nb3/1Pr5/2P1p3/N1p5/2K5/kPNp4/P1p5/Brn5 w - - 0 1)

Lider, Valentin Viktorovich

Shakhmaty v SSSR, 1973

R2nb3/1Pr5/2P1p3/N1p5/2K5/kPNp4/P1p5/Brn5

#2

9 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb3
      • 2.Sxb3#
    • 1...Rxc6
      • 2.Sxc6#
    • 1...Rxb7
      • 2.Sxb7#
    • 1...Bxc6
      • 2.Sxc6#
    • 1...Sxa2
      • 2.Sb5#
    • 1...Sxb3
      • 2.Sxb3#
    • 1...Sxc6
      • 2.Sxc6#
    • 1...Sxb7
      • 2.Sxb7#
  • Tries
    • 1.Kb5?
      • threat
        • 2.Sc4#
      • 1...Rxb3+
        • 2.Sxb3#
      • 1...Rxb7+
        • 2.Sxb7#
      • 1...Bxc6+
        • 2.Sxc6#
      • 1...c4
        • 2.Sxc4#
      • 1...Sxa2!
  • Keys
    • 1.Kxc5!
      • threat
        • 2.Sc4#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Sxb3+
        • 2.Sxb3#
      • 1...Sxb7+
        • 2.Sxb7#
      • 1...Sxa2
        • 2.Sb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(a);XP(C)::R(I)+S(F),XR(a)
    • R(h);XP(G)::R(I)+S(F),XR(h)
    • R(h);XP(H)::R(I)+S(F),XR(h)
    • B(j);XP(G)::R(I)+S(F),XB(j)
    • S(b);SBLOCK,XP(B)::S(D)
    • S(b);XP(C)::R(I)+S(F),XS(b)
    • S(i);XP(G)::R(I)+S(F),XS(i)
    • S(i);XP(H)::R(I)+S(F),XS(i)
  • Tries
    • Try
      • K(E);P_SPINP(C),S_FLIGHT
      • Threat
        • R(I)+S(F),DCHECK
      • Vars
        • R(a);CHECK,P_PINP(G),XP(C)::R(I)+S(F),XR(a)
        • R(h);CHECK,XP(H)::R(I)+S(F),XR(h)
        • B(j);CHECK,XP(G)::R(I)+S(F),XB(j)
        • P(f);::R(I)+S(F),DCHECK,XP(f)
      • Refutation
        • S(b);XP(B)
  • Actual
    • K(E);P-FLIGHT,P_SPINP(G),XP(f)
    • Threat
      • R(I)+S(F),DCHECK
    • Vars
      • R(h);CHECK,XP(G)::R(I)+S(F),XR(h)
      • S(b);CHECK,XP(C)::R(I)+S(F),XS(b)
      • S(i);CHECK,XP(H)::R(I)+S(F),XS(i)
      • S(b);SBLOCK,XP(B)::S(D)
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