MESON Chess Problem Database

Problem Display
PID: 7361 (4N2R/5p2/3Pk2K/1P2N3/3Bp3/4P3/4B3/8 w - - 0 1)

Farion, Petro Petrovich

StrateGems, 1999

4N2R/5p2/3Pk2K/1P2N3/3Bp3/4P3/4B3/8

#2

9 + 3

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Bc4#
    • 1...Kf5
      • 2.Bg4#
    • 1...f5
      • 2.Bc4#
  • Tries
    • 1.Kg5?
      • threat
        • 2.Bc4#
      • 1...Kd5
        • 2.Bc4#
      • 1...f6+!
    • 1.Kh5?
      • 1...Kd5
        • 2.Bc4#
      • 1...Kf5
        • 2.Bg4#
      • 1...f5
        • 2.Bc4#
      • 1...f6!
    • 1.Bd1?
      • 1...Kd5
        • 2.Bb3#
      • 1...Kf5
        • 2.Bg4#
      • 1...f5
        • 2.Bb3#
      • 1...f6!
    • 1.Bf1?
      • 1...Kd5
        • 2.Bc4#
      • 1...Kf5
        • 2.Bh3#
      • 1...f5
        • 2.Bc4#
      • 1...f6!
    • 1.Bh5?
      • 1...Kd5
        • 2.Bxf7#
      • 1...Kf5
        • 2.Bg4#
      • 1...f5
        • 2.Bf7#
      • 1...f6!
    • 1.Rh7?
      • 1...Kd5
        • 2.Bc4#
      • 1...Kf5
        • 2.Bg4#
      • 1...f5
        • 2.Bc4#
      • 1...f6!
    • 1.Rf8?
      • 1...Kd5
        • 2.Bc4#
      • 1...Kf5
        • 2.Bg4#
      • 1...f5
        • 2.Bc4#
      • 1...f6!
    • 1.Rg8?
      • 1...Kd5
        • 2.Bc4#
      • 1...Kf5
        • 2.Bg4#
      • 1...f5
        • 2.Bc4#
      • 1...f6!
    • 1.b6?
      • 1...Kd5
        • 2.Bc4#
      • 1...Kf5
        • 2.Bg4#
      • 1...f5
        • 2.Bc4#
      • 1...f6!
  • Keys
    • 1.Sxf7!
      • 1...Kd5
        • 2.Sc7#
      • 1...Kf5
        • 2.Sg7#
      • 1...Kd7
        • 2.Bg4#
      • 1...Kxf7
        • 2.Bc4#

Anticipated by 120993(1952)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);S_FLIGHT::B(A)
    • P(c);SBLOCK::B(A)
  • Tries
    • Try
      • K(G);S_FLIGHT
      • Threat
        • B(A)
      • Vars
        • K(b);S_FLIGHT::B(A)
      • Refutation
        • P(c);CHECK
    • Try
      • K(G);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(c);SBLOCK::B(A)
      • Refutation
        • P(c);
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(c);SBLOCK::B(A)
      • Refutation
        • P(c);
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(c);SBLOCK::B(A)
      • Refutation
        • P(c);
    • Try
      • B(A);
      • Vars
        • K(b);S_FLIGHT::B(A),XP(c)
        • K(b);S_FLIGHT::B(A)
        • P(c);SBLOCK::B(A)
      • Refutation
        • P(c);
    • Try
      • R(I);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(c);SBLOCK::B(A)
      • Refutation
        • P(c);
    • Try
      • R(I);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • K(b);P_SPINP(c),S_FLIGHT::B(A)
        • P(c);::B(A)
      • Refutation
        • P(c);
    • Try
      • R(I);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(c);SBLOCK::B(A)
      • Refutation
        • P(c);
    • Try
      • P(D);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(c);SBLOCK::B(A)
      • Refutation
        • P(c);
  • Actual
    • S(E);XP(c)
    • Vars
      • K(b);S_FLIGHT::S(H)
      • K(b);S_FLIGHT::B(A)
      • K(b);S_FLIGHT,XS(E)::B(A)
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