MESON Chess Problem Database

Problem Display
PID: 102915 (5K2/4N3/4pkp1/3n4/4p3/2R4N/1R6/B7 w - - 0 1)

Usmanov, Rashid R

Uralski Skazi, 1990

5K2/4N3/4pkp1/3n4/4p3/2R4N/1R6/B7

#2

6 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Rc6#
  • Tries
    • 1.Rf2+?
      • 1...Sf4
        • 2.Rc6#
      • 1...Ke5!
    • 1.Rb5?
      • threat
        • 2.Rf3#
      • 1...Ke5
        • 2.Rc6#
      • 1...Sxc3
        • 2.Sg8#
      • 1...Se3
        • 2.Sg8#
        • 2.Rc6#
      • 1...Sf4
        • 2.Sg8#
        • 2.Rc6#
      • 1...e5
        • 2.Rc6#
      • 1...e3!
    • 1.Rb6?
      • threat
        • 2.Rf3#
      • 1...Ke5
        • 2.Rc5#
      • 1...Sxc3
        • 2.Bxc3#
      • 1...Se3
        • 2.Rc1#
        • 2.Rc2#
        • 2.Ra3#
        • 2.Rcb3#
        • 2.Rd3#
        • 2.Rxe3#
        • 2.Rc4#
        • 2.Rc5#
        • 2.Rcc6#
        • 2.Rc7#
        • 2.Rc8#
      • 1...e3!
    • 1.Rc6?
      • threat
        • 2.Rf2#
      • 1...Ke5
        • 2.Rb5#
      • 1...Sc3!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rf2#
      • 1...Ke5
        • 2.Rb6#
      • 1...Sf4
        • 2.Sg8#
        • 2.Rb6#
      • 1...e5
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB,SBLOCK::R(C)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(b);P_SPINS(b)::B(A)+R(C)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • B(A)+R(C),DCHECK
      • Vars
        • K(d);P_SPINS(b),S_FLIGHT::B(A)+R(C)
        • S(b);P_SPINS(b),XR(C)::S(E)
        • P(c);S_CUTS(b)::R(C)
      • Refutation
        • P(a);
    • Try
      • R(B);P_PINP(c)
      • Threat
        • B(A)+R(C),DCHECK
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::B(A)+R(C)
        • S(b);OGATE,P_SPINS(b),XR(C)::B(A),XS(b)
      • Refutation
        • P(a);
    • Try
      • R(C);P_PINP(c)
      • Threat
        • B(A)+R(B),DCHECK
      • Vars
        • K(d);N_SPINP(c),S_FLIGHT::B(A)+R(B)
      • Refutation
        • S(b);
  • Actual
    • R(C);
    • Threat
      • B(A)+R(B),DCHECK
    • Vars
      • K(d);P_SPINS(b),S_FLIGHT::B(A)+R(B)
      • P(c);OGATEB,SBLOCK::R(C)
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