MESON Chess Problem Database

Problem Display
PID: 1055 (8/3n4/4n3/3R1R2/2P1k3/1N4P1/3K4/8 w - - 0 1)

Lewis, Robert Tony

The Problemist Supplement, 1999

8/3n4/4n3/3R1R2/2P1k3/1N4P1/3K4/8

#2

6 + 3

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.Rf4#
    • 1...Sf4
      • 2.Rxf4#
    • 1...Sec5
      • 2.Rf4#
    • 1...Sg5
      • 2.Rf4#
    • 1...Sc7
      • 2.Rf4#
    • 1...Sg7
      • 2.Rf4#
    • 1...Sd8
      • 2.Rf4#
    • 1...Sef8
      • 2.Rf4#
    • 1...Sdc5
      • 2.Rde5#
    • 1...Se5
      • 2.Rdxe5#
    • 1...Sb6
      • 2.Rde5#
    • 1...Sf6
      • 2.Rde5#
    • 1...Sb8
      • 2.Rde5#
    • 1...Sdf8
      • 2.Rde5#
  • Tries
    • 1.Ke2?
      • threat
        • 2.Sd2#
      • 1...Sf4+
        • 2.Rxf4#
      • 1...Se5
        • 2.Rdxe5#
        • 2.Rfxe5#
      • 1...Sd4+!
    • 1.Sc5+?
      • 1...Sexc5
        • 2.Rf4#
      • 1...Sdxc5!
    • 1.g4?
      • 1...Sdc5
        • 2.Rde5#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sec5
        • 2.Rd4#
      • 1...Sg5
        • 2.Rd4#
      • 1...Sc7
        • 2.Rd4#
      • 1...Sg7
        • 2.Rd4#
      • 1...Sd8
        • 2.Rd4#
      • 1...Sef8
        • 2.Rd4#
      • 1...Se5
        • 2.Rdxe5#
      • 1...Sb6
        • 2.Rde5#
      • 1...Sf6
        • 2.Rde5#
      • 1...Sb8
        • 2.Rde5#
      • 1...Sdf8
        • 2.Rde5#
      • 1...Sf4!
  • Keys
    • 1.Sd4!
      • 1...Sxd4
        • 2.Rf4#
      • 1...Sdc5
        • 2.Rfe5#
      • 1...Sf4
        • 2.Rxf4#
      • 1...Sec5
        • 2.Rf4#
      • 1...Sg5
        • 2.Rf4#
      • 1...Sc7
        • 2.Rf4#
      • 1...Sg7
        • 2.Rf4#
      • 1...Sd8
        • 2.Rf4#
      • 1...Sef8
        • 2.Rf4#
      • 1...Se5
        • 2.Rfxe5#
      • 1...Sb6
        • 2.Rfe5#
      • 1...Sf6
        • 2.Rfe5#
      • 1...Sb8
        • 2.Rfe5#
      • 1...Sdf8
        • 2.Rfe5#

Anticipated by 51120(1950)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 6
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);N_GUARD::R1(F)
    • S(b);N_GUARD::R1(F),XS(b)
    • S(c);N_GUARD::R1(E)
    • S(c);N_GUARD::R1(E),XS(c)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • S(B)
      • Vars
        • S(b);CHECK,N_GUARD::R1(F),XS(b)
      • Refutation
        • S(b);CHECK
    • Try
      • S(B);CHECK
      • Vars
        • S(b);XS(B)::R1(F)
      • Refutation
        • S(c);XS(B)
    • Try
      • P(C);
      • Vars
        • S(c);N_GUARD::R1(E)
        • S(b);N_GUARD::R1(E),XS(b)
        • S(b);N_GUARD::R1(E)
        • S(c);N_GUARD::R1(E),XS(c)
      • Refutation
        • S(b);
  • Actual
    • S(B);
    • Vars
      • S(b);N_GUARD,XS(B)::R1(F)
      • S(c);N_GUARD::R1(F)
      • S(b);N_GUARD::R1(F),XS(b)
      • S(b);N_GUARD::R1(F)
      • S(c);N_GUARD::R1(F),XS(c)
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