MESON Chess Problem Database

Problem Display
PID: 267980 (2n5/1KR3N1/pP1kP3/4p3/2P3b1/q2p1pB1/6N1/6r1 w - - 0 1)

Evdokimov, Valery Antolovich

Stepochkin, Anatoly Viktorovich

Shakhmatnaya kompozitsiya, 1995

2n5/1KR3N1/pP1kP3/4p3/2P3b1/q2p1pB1/6N1/6r1

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.Rd7#
    • 1...Bxe6
      • 2.Se8#
  • Tries
    • 1.Bf2?
      • threat
        • 2.Rd7#
      • 1...Bxe6
        • 2.Se8#
      • 1...e4
        • 2.Bg3#
      • 1...Qa4
        • 2.Bc5#
      • 1...Sxb6!
    • 1.Bh4?
      • threat
        • 2.Rc6#
      • 1...Bxe6
        • 2.Se8#
      • 1...e4
        • 2.Bg3#
      • 1...Qc5
        • 2.Rd7#
      • 1...Sa7
        • 2.Be7#
      • 1...Se7
        • 2.Bxe7#
      • 1...Qa4!
    • 1.c5+?
      • 1...Qxc5
        • 2.Rd7#
      • 1...Kd5!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Se8#
      • 1...exf4
        • 2.Bxf4#
      • 1...e4
        • 2.Sg2#
      • 1...Qa4
        • 2.c5#
      • 1...Bh5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • Q(b);SBLOCK::R1(G)
    • B(e);SBLOCK,XP(E)::S(H)
  • Tries
    • Try
      • B(B);N_PINP(f)
      • Threat
        • R1(G)
      • Vars
        • B(e);SBLOCK,XP(E)::S(H)
        • P(f);OGATEB::B(B)
        • Q(b);N_GUARD::B(B)
      • Refutation
        • S(i);XP(D)
    • Try
      • B(B);N_PINP(f)
      • Threat
        • R1(G)
      • Vars
        • B(e);SBLOCK,XP(E)::S(H)
        • P(f);OGATEB::B(B)
        • Q(b);SBLOCK::R1(G)
        • S(i);N_GUARD::B(B)
        • S(i);N_GUARD::B(B),XS(i)
      • Refutation
        • Q(b);
    • Try
      • P(C);CHECK
      • Vars
        • Q(b);SBLOCK,XP(C)::R1(G)
      • Refutation
        • K(h);N_SPINP(f),P-FLIGHT
  • Actual
    • S(A);N_PINP(f)
    • Threat
      • S(H)
    • Vars
      • P(f);OGATE,P_SPINP(f),XS(A)::B(B),XP(f)
      • P(f);::B(B)+S(A)
      • Q(b);N_GUARD::P(C)
      • B(e);N_GUARD::S(H)
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