MESON Chess Problem Database

Problem Display
PID: 150457 (6B1/8/p3R3/1kB1pN1Q/2R1p3/8/4K3/8 w - - 0 1)

Monteiro da Silveira, ?

1st Prize, Source?, 1930

6B1/8/p3R3/1kB1pN1Q/2R1p3/8/4K3/8

#2

7 + 4

14868 Pirnie Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.Rb6#
  • Tries
    • 1.Se3?
      • 1...a5
        • 2.Rb6#
        • 2.Qe8#
      • 1...Ka5!
    • 1.Be3?
      • threat
        • 2.Rxe5#
      • 1...Ka5
        • 2.Rxe5#
      • 1...a5
        • 2.Rb6#
      • 1...Kxc4!
    • 1.Ba7?
      • threat
        • 2.Rxe5#
      • 1...Ka5
        • 2.Rxe5#
      • 1...a5
        • 2.Rb6#
      • 1...Kxc4!
    • 1.Qe8+?
      • 1...Ka5
        • 2.Bb4#
        • 2.Bb6#
        • 2.Ra4#
        • 2.Qa4#
      • 1...Kxc4!
  • Keys
    • 1.Bd4!
      • threat
        • 2.Rxe5#
      • 1...Kxc4
        • 2.Rb6#
      • 1...Ka5
        • 2.Rxe5#
      • 1...exd4
        • 2.Se3#
      • 1...a5
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::R1(F)
  • Tries
    • Try
      • S(D);
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(C);
      • Threat
        • R(F),XP(c)
      • Vars
        • K(b);P-FLIGHT::R(F),XP(c)
        • P(d);SBLOCK::R1(F)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • B(C);
      • Threat
        • R(F),XP(c)
      • Vars
        • K(b);P-FLIGHT::R(F),XP(c)
        • P(d);SBLOCK::R1(F)
      • Refutation
        • K(b);S_FLIGHT,XR(B)
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(B)
  • Actual
    • B(C);
    • Threat
      • R(F),XP(c)
    • Vars
      • K(b);S_FLIGHT,XR(B)::B(G)+R(F)
      • K(b);P-FLIGHT::R(F),XP(c)
      • P(c);XB(C)::QAR(E)+S(D)
      • P(d);SBLOCK::R1(F)
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