MESON Chess Problem Database

Problem Display
PID: 110381 (5Kn1/4p3/4N1k1/8/6B1/8/8/5R1R w - - 0 1)

Mlynka, Karol

1st HM., Valuska-50 JT, 1997-1999

5Kn1/4p3/4N1k1/8/6B1/8/8/5R1R

#2

5 + 3

6490 yacpdb 2009
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Bf5#
  • Tries
    • 1.Bh3?
      • 1...Kh5
        • 2.Bf5#
      • 1...Kh6
        • 2.Bf5#
      • 1...Kh7
        • 2.Bf5#
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6!
    • 1.Bh5+?
      • 1...Kh6
        • 2.Bf7#
        • 2.Be8#
      • 1...Kh7!
    • 1.Rf2?
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6!
    • 1.Rf3?
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6!
    • 1.Rf4?
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6!
    • 1.Rh2?
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6!
    • 1.Rh3?
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6!
    • 1.Rh4?
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6!
    • 1.Rh5?
      • 1...Sf6
        • 2.Sf4#
      • 1...Sh6!
    • 1.Rh7?
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6
        • 2.Rg7#
      • 1...Kxh7!
    • 1.Rh8?
      • threat
        • 2.Bh5#
      • 1...Sf6
        • 2.Bf5#
      • 1...Sh6!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Bf5#
      • 1...Sf6
        • 2.Rg7#
      • 1...Sh6
        • 2.Bh5#

Anticipated by 90068(1963), 203833(1979), 929(1993)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::B(C)
  • Tries
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::R(B)+B(C)
        • K(a);P-FLIGHT::R(B)+B(C)
        • K(a);S_FLIGHT::R(B)+B(C),DCHECK
        • S(c);SBLOCK::B(C)
      • Refutation
        • S(c);
    • Try
      • B(C);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • S(c);SBLOCK::B(C)
      • Refutation
        • S(c);
    • Try
      • R(A);
      • Vars
        • S(c);SBLOCK::B(C)
      • Refutation
        • S(c);
    • Try
      • R(A);
      • Vars
        • S(c);SBLOCK::B(C)
      • Refutation
        • S(c);
    • Try
      • R(B);
      • Vars
        • S(c);SBLOCK::B(C)
      • Refutation
        • S(c);
    • Try
      • R(B);
      • Vars
        • S(c);SBLOCK::B(C)
      • Refutation
        • S(c);
    • Try
      • R(B);
      • Vars
        • S(c);SBLOCK::B(C)
      • Refutation
        • S(c);
    • Try
      • R(B);
      • Vars
        • S(c);SBLOCK::S(D)
      • Refutation
        • S(c);
    • Try
      • R(B);
      • Vars
        • S(c);SBLOCK::B(C)
        • S(c);SBLOCK::R1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • R(B);
      • Threat
        • B(C)
      • Vars
        • S(c);SBLOCK::B(C)
      • Refutation
        • S(c);
  • Actual
    • R(A);
    • Threat
      • B(C)
    • Vars
      • S(c);SBLOCK::R1(A)
      • S(c);SBLOCK::B(C)
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