MESON Chess Problem Database

Problem Display
PID: 227769 (8/8/N7/B7/Bnk1K3/8/1R6/8 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1926

8/8/N7/B7/Bnk1K3/8/1R6/8

#2

5 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Rc2#
    • 1...Sa2
      • 2.Bb5#
    • 1...Sc2
      • 2.Bb5#
      • 2.Rxc2#
    • 1...Sd3
      • 2.Bb5#
      • 2.Rc2#
    • 1...Sd5
      • 2.Bb5#
    • 1...Sxa6
      • 2.Rc2#
    • 1...Sc6
      • 2.Bb5#
      • 2.Rc2#
  • Tries
    • 1.Sxb4?
      • threat
        • 2.Rc2#
      • 1...Kc3
        • 2.Rc2#
      • 1...Kc5!
    • 1.Rb1?
      • 1...Sxa6
        • 2.Rc1#
      • 1...Sa2
        • 2.Bb5#
      • 1...Sc2
        • 2.Bb5#
      • 1...Sd3
        • 2.Bb5#
      • 1...Sd5
        • 2.Bb5#
      • 1...Sc6
        • 2.Bb5#
        • 2.Rc1#
      • 1...Kc3!
  • Keys
    • 1.Rd2!
      • 1...Kc3
        • 2.Rc2#
      • 1...Sxa6
        • 2.Rc2#
      • 1...Sa2
        • 2.Rd4#
      • 1...Sc2
        • 2.Rxc2#
      • 1...Sd3
        • 2.Rc2#
      • 1...Sd5
        • 2.Rd4#
      • 1...Sc6
        • 2.Rc2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,P_SPINS(a)::R1(A)
    • S(a);::B(B)
    • S(a);N_GUARD,XS(E)::R(A)
  • Tries
    • Try
      • S(E);XS(a)
      • Threat
        • R(A)
      • Vars
        • K(b);P-FLIGHT::R1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • R(A);
      • Vars
        • S(a);N_GUARD,XS(E)::R(A)
        • S(a);::B(B)
      • Refutation
        • K(b);P-FLIGHT,P_SPINS(a)
  • Actual
    • R(A);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(a)::R1(A)
      • S(a);N_GUARD,XS(E)::R(A)
      • S(a);::R1(A)
      • S(a);N_GUARD::R(A),XS(a)
      • S(a);N_GUARD::R(A)
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