MESON Chess Problem Database

Problem Display
PID: 272041 (2R5/3N4/2P1p3/1Npkp1B1/P5P1/P7/2PKP3/7R w - - 0 1)

Vakhlakov, Yuri Nikolaevich

Shakhmatnaya kompozitsiya, 1998

2R5/3N4/2P1p3/1Npkp1B1/P5P1/P7/2PKP3/7R

#2

12 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sb6#
    • 1...Ke4
      • 2.Sf6#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Sf6#
      • 1...Ke4
        • 2.Sf6#
      • 1...e4
        • 2.Rd1#
      • 1...c4!
    • 1.Ke3?
      • threat
        • 2.Sb6#
      • 1...Kc4
        • 2.Sb6#
      • 1...c4
        • 2.Rd1#
      • 1...e4!
    • 1.Be3?
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Sc3#
        • 2.Sf6#
      • 1...c4
        • 2.Sf6#
      • 1...e4!
    • 1.Rc1?
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Sf6#
      • 1...e4
        • 2.c4#
      • 1...c4!
    • 1.Re1?
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Sf6#
      • 1...c4
        • 2.e4#
      • 1...e4!
    • 1.c4+?
      • 1...Ke4
        • 2.Sxc5#
        • 2.Sf6#
      • 1...Kxc4!
    • 1.e4+?
      • 1...Kc4
        • 2.Sxe5#
        • 2.Sb6#
      • 1...Kxe4!
  • Keys
    • 1.Rd1!
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke4
        • 2.Sf6#
      • 1...e4
        • 2.Kc3#
      • 1...c4
        • 2.Ke3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,S_FLIGHT::S(K)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • S(K)
      • Vars
        • K(b);S_FLIGHT::S(K)
        • P(c);SBLOCK::R(A)
      • Refutation
        • P(a);
    • Try
      • K(C);S_FLIGHT
      • Threat
        • S(K)
      • Vars
        • K(b);S_FLIGHT::S(K)
        • P(a);SBLOCK::R(A)
      • Refutation
        • P(c);
    • Try
      • B(I);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(K)
        • P(a);SBLOCK::S(K)
      • Refutation
        • P(c);
    • Try
      • R(A);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(K)
        • P(c);SBLOCK::P(B)
      • Refutation
        • P(a);
    • Try
      • R(A);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::S(K)
        • P(a);SBLOCK::P(D)
      • Refutation
        • P(c);
    • Try
      • P(B);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(B)
    • Try
      • P(D);CHECK
      • Refutation
        • K(b);S_FLIGHT,XP(D)
  • Actual
    • R(A);
    • Vars
      • K(b);N_GUARD,S_FLIGHT::S(K)
      • P(c);SBLOCK::R(A)+K(C)
      • P(a);SBLOCK::R(A)+K(C)
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