MESON Chess Problem Database

Problem Display
PID: 242182 (1N1B3n/4K3/8/1b2kp2/1R3N1R/2rp4/6B1/8 w - - 0 1)

Kisis, Imants J

Shakhmaty (Riga), 1961

1N1B3n/4K3/8/1b2kp2/1R3N1R/2rp4/6B1/8

#2

7 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Bc7#
    • 1...Rb3
      • 2.Bc7#
    • 1...Rc4
      • 2.Sxd3#
    • 1...Rc6
      • 2.Sd7#
    • 1...Rc7+
      • 2.Bxc7#
    • 1...Bc4
      • 2.Sc6#
    • 1...Ba6
      • 2.Sd7#
    • 1...Bc6
      • 2.Bc7#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Sg6+
      • 2.Sxg6#
    • 1...Sf7
      • 2.Sg6#
  • Tries
    • 1.Sxd3+?
      • 1...Bxd3
        • 2.Sd7#
      • 1...Rxd3!
    • 1.Sc6+?
      • 1...Bxc6
        • 2.Bc7#
      • 1...Rxc6!
    • 1.Bc6?
      • threat
        • 2.Sd7#
        • 2.Bc7#
      • 1...Sg6+
        • 2.Sxg6#
      • 1...Rxc6
        • 2.Sd7#
      • 1...Bxc6
        • 2.Bc7#
      • 1...Rc4
        • 2.Sxd3#
      • 1...Sf7
        • 2.Sg6#
        • 2.Sd7#
      • 1...Bc4!
    • 1.Bb6?
      • threat
        • 2.Bd4#
      • 1...Rc7+
        • 2.Bxc7#
      • 1...Sg6+
        • 2.Sxg6#
      • 1...Rc4
        • 2.Sxd3#
      • 1...Bc4
        • 2.Sc6#
        • 2.Sd7#
      • 1...Rc5!
    • 1.Rxb5+?
      • 1...Rc5
        • 2.Sxd3#
        • 2.Sc6#
      • 1...Kd4!
  • Keys
    • 1.Rc4!
      • threat
        • 2.Bc7#
      • 1...Sg6+
        • 2.Sxg6#
      • 1...Rxc4
        • 2.Sxd3#
      • 1...Bxc4
        • 2.Sc6#
      • 1...Sf7
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::B(G)
    • R(a);N_GUARD,S_CUTB(c)::S(C),XP(b)
    • R(a);S_CUTB(c)::S(F)
    • R(a);CHECK,N_GUARD::B(G),XR(a)
    • B(c);N_GUARD,S_CUTR(a)::S(F)
    • B(c);N_GUARD::S(F)
    • B(c);S_CUTR(a)::B(G)
    • B(c);N_GUARD::S(F),XB(c)
    • S(f);CHECK,N_GUARD::S(C),XS(f)
    • S(f);N_GUARD::S(C)
  • Tries
    • Try
      • S(C);CHECK,XP(b)
      • Vars
        • B(c);XS(C)::S(F)
      • Refutation
        • R(a);XS(C)
    • Try
      • S(F);CHECK
      • Vars
        • B(c);XS(F)::B(G)
      • Refutation
        • R(a);XS(F)
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Vars
        • S(f);CHECK,N_GUARD::S(C),XS(f)
        • R(a);XB(A)::S(F)
        • B(c);XB(A)::B(G)
        • R(a);N_GUARD,S_CUTB(c)::S(C),XP(b)
      • Refutation
        • B(c);
    • Try
      • B(G);
      • Threat
        • B(G)
      • Vars
        • R(a);CHECK,N_GUARD::B(G),XR(a)
        • S(f);CHECK,N_GUARD::S(C),XS(f)
        • R(a);N_GUARD,S_CUTB(c)::S(C),XP(b)
      • Refutation
        • R(a);
    • Try
      • R(B);CHECK,XB(c)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • R(B);
    • Threat
      • B(G)
    • Vars
      • S(f);CHECK,N_GUARD::S(C),XS(f)
      • R(a);N_GUARD,XR(B)::S(C),XP(b)
      • B(c);N_GUARD,XR(B)::S(F)
      • S(f);N_GUARD::S(C)
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