MESON Chess Problem Database

Problem Display
PID: 228138 (2R5/K3p3/8/kp1n4/4R3/1P4B1/8/8 w - - 0 1)

Akimov, Nikolai Nikolaevich

Sachmatija, 2020

2R5/K3p3/8/kp1n4/4R3/1P4B1/8/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Sc3
      • 2.Bc7#
    • 1...Se3
      • 2.Bc7#
    • 1...Sb4
      • 2.Bc7#
    • 1...Sf6
      • 2.Bc7#
    • 1...Sc7
      • 2.Bxc7#
    • 1...b4
      • 2.Rc5#
  • Tries
    • 1.Kb7?
      • threat
        • 2.Ra8#
      • 1...b4
        • 2.Rc5#
      • 1...Sb4
        • 2.Bc7#
      • 1...Sc7
        • 2.Bxc7#
      • 1...Sb6!
    • 1.Be1+?
      • 1...Sb4
        • 2.Bxb4#
      • 1...b4
        • 2.Rc5#
      • 1...Sc3!
    • 1.Bc7+?
      • 1...Sb6
        • 2.Bxb6#
      • 1...Sxc7!
    • 1.Rc1?
      • threat
        • 2.Ra1#
      • 1...b4
        • 2.Rc5#
      • 1...Sc3
        • 2.Bc7#
      • 1...Sb4
        • 2.Bc7#
      • 1...Sb6!
    • 1.Rc2?
      • threat
        • 2.Ra2#
      • 1...b4
        • 2.Rc5#
      • 1...Sc3
        • 2.Bc7#
      • 1...Sb4
        • 2.Bc7#
      • 1...Sb6!
    • 1.Rc6?
      • threat
        • 2.Ra6#
      • 1...b4
        • 2.Rc5#
      • 1...Sb4
        • 2.Bc7#
      • 1...Sc7
        • 2.Bxc7#
      • 1...Sb6!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Ra4#
      • 1...Sb6
        • 2.Be1#
      • 1...Sc3
        • 2.Bc7#
      • 1...Sb4
        • 2.Bc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • S(c);N_GUARD::B(B)
    • S(c);N_GUARD::B(B),XS(c)
    • P(b);OGATEB::R(E)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • R(E)
      • Vars
        • P(b);OGATEB::R(E)
        • S(c);N_GUARD::B(B)
        • S(c);N_GUARD::B(B),XS(c)
      • Refutation
        • S(c);
    • Try
      • B(B);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::B(B),XS(c)
        • P(b);P_SPINP(b),S_CUTS(c),S_CUTS(c)::R(E)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • B(B);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::B(B),XS(c)
      • Refutation
        • S(c);XB(B)
    • Try
      • R(E);
      • Threat
        • R(E)
      • Vars
        • P(b);OGATEB::R(E)
        • S(c);N_GUARD::B(B)
      • Refutation
        • S(c);
    • Try
      • R(E);
      • Threat
        • R(E)
      • Vars
        • P(b);OGATEB::R(E)
        • S(c);N_GUARD::B(B)
      • Refutation
        • S(c);
    • Try
      • R(E);
      • Threat
        • R1(E)
      • Vars
        • P(b);OGATEB::R(E)
        • S(c);N_GUARD::B(B)
        • S(c);N_GUARD::B(B),XS(c)
      • Refutation
        • S(c);
  • Actual
    • R(E);P_PINP(b)
    • Threat
      • R1(C)
    • Vars
      • S(c);N_GUARD::B(B)
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