MESON Chess Problem Database

Problem Display
PID: 206357 (1Bb5/8/6pK/3R3p/4p2r/2N1k2N/2p1p1B1/r1R5 w - - 0 1)

Wein, O

L'Alfiere di Re, 1925

1Bb5/8/6pK/3R3p/4p2r/2N1k2N/2p1p1B1/r1R5

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc1
      • 2.Ba7#
    • 1...Ra7
      • 2.Bxa7#
    • 1...Rf4
      • 2.Bxf4#
    • 1...Bg4
      • 2.Bf4#
    • 1...Ba6
      • 2.Ba7#
  • Keys
    • 1.Re1!
      • threat
        • 2.Rxe2#
      • 1...Rxe1
        • 2.Ba7#
      • 1...c1S
        • 2.Sd1#
      • 1...Bg4
        • 2.Bf4#
      • 1...Ba6
        • 2.Ba7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(a);N_GUARD,XR(A)::B(G)
    • R(a);N_GUARD::B(G),XR(a)
    • R(f);N_GUARD::B(G),XR(f)
    • B(i);S_CUTR(f)::B(G)
    • B(i);S_CUTR(a)::B(G)
  • Actual
    • R(A);P_PINP(c)
    • Threat
      • R1(A),XP(c)
    • Vars
      • R(a);N_GUARD,N_SPINP(c),XR(A)::B(G)
      • P(b);N_GUARD,S_CUTR(a)::S(C)
      • B(i);S_CUTR(f)::B(G)
      • B(i);S_CUTR(a)::B(G)
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