MESON Chess Problem Database

Problem Display
PID: 223160 (8/2pRbP2/1q2k1B1/1r2Pn2/1p1PK1p1/2ppB2Q/8/8 w - - 0 1)

Vaux, Roberts

Philadelphia Times, 1886

8/2pRbP2/1q2k1B1/1r2Pn2/1p1PK1p1/2ppB2Q/8/8

#2

8 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bh4
      • 2.Bxf5#
      • 2.f8S#
    • 1...Bc5
      • 2.Bxf5#
    • 1...Bg5
      • 2.Bxf5#
      • 2.f8S#
    • 1...Bd6
      • 2.Bxf5#
    • 1...Bf6
      • 2.Bxf5#
      • 2.f8S#
    • 1...Bd8
      • 2.Bxf5#
      • 2.f8S#
    • 1...Bf8
      • 2.Bxf5#
    • 1...g3
      • 2.Qxf5#
  • Tries
    • 1.Rxe7+?
      • 1...Sxe7
        • 2.f8S#
      • 1...Kxe7!
  • Keys
    • 1.f8S+!
      • 1...Bxf8
        • 2.Bxf5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • B(j);::B(F),XS(f)
    • P(d);OGATE,P_SPINS(f)::QAB1(B),XS(f)
  • Tries
    • Try
      • R(G);CHECK,XB(j)
      • Vars
        • S(f);N_GUARD,P_SPINP(d),SBLOCK,XR(G)::P=S
      • Refutation
        • K(h);P-FLIGHT,XR(G)
  • Actual
    • P(H);CHECK
    • Vars
      • B(j);XS(H)::B(F),XS(f)
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