MESON Chess Problem Database

Problem Display
PID: 99075 (5k1N/6pP/2b1R3/4Pp1N/B3p2R/r2p1p1K/1p2QP2/1qB1b3 w - - 0 1)

Burda, Josef

Sakkelet, 1998

5k1N/6pP/2b1R3/4Pp1N/B3p2R/r2p1p1K/1p2QP2/1qB1b3

#2

11 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Re8#
    • 1...Bb7
      • 2.Re8#
    • 1...Ba8
      • 2.Re8#
    • 1...Be8
      • 2.Rxe8#
    • 1...f4
      • 2.Rxf4#
    • 1...g6
      • 2.Bh6#
  • Tries
    • 1.Rf4?
      • threat
        • 2.Rxf5#
      • 1...Be8
        • 2.Rxe8#
      • 1...g6!
    • 1.Re7?
      • threat
        • 2.Sg6#
      • 1...Be8
        • 2.Rxe8#
      • 1...g6
        • 2.Sxg6#
      • 1...Kxe7!
    • 1.Qxf3?
      • threat
        • 2.Qxf5#
      • 1...Be8
        • 2.Rxe8#
      • 1...d2
        • 2.Qxa3#
      • 1...f4
        • 2.Rxf4#
        • 2.Qxf4#
      • 1...g6
        • 2.Bh6#
      • 1...exf3!
  • Keys
    • 1.Qxe4!
      • threat
        • 2.Qxf5#
      • 1...Bxe4
        • 2.Re8#
      • 1...fxe4
        • 2.Rf4#
      • 1...Be8
        • 2.Rxe8#
      • 1...d2
        • 2.Qb4#
      • 1...f4
        • 2.Rxf4#
        • 2.Qf5#
        • 2.Qxf4#
      • 1...g6
        • 2.Bh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(i);N_GUARD::R1(I)
    • B(i);N_GUARD::R1(I),XB(i)
    • P(h);OGATEB::R(F),XP(h)
    • P(j);OGATEB::B(A)
  • Tries
    • Try
      • R(F);P_PINP(h)
      • Threat
        • R(F),XP(h)
      • Vars
        • B(i);N_GUARD::R1(I),XB(i)
      • Refutation
        • P(j);
    • Try
      • R(I);
      • Threat
        • S(K)
      • Vars
        • B(i);N_GUARD::R1(I),XB(i)
        • P(j);::S(K),XP(j)
      • Refutation
        • K(k);S_FLIGHT,XR(I)
    • Try
      • Q(B);P_PINP(h),XP(f)
      • Threat
        • QAR(B),XP(h)
      • Vars
        • B(i);N_GUARD::R1(I),XB(i)
        • P(e);OGATE,P_PINQ(B)::QAB(B),XR(d)
        • P(j);OGATEB::B(A)
      • Refutation
        • P(g);N_SPINP(h),XQ(B)
  • Actual
    • Q(B);XP(g)
    • Threat
      • QAR(B),XP(h)
    • Vars
      • B(i);N_GUARD,XQ(B)::R1(I)
      • P(h);OGATEB,XQ(B)::R(F)
      • B(i);N_GUARD::R1(I),XB(i)
      • P(e);S_CUTB(b)::QAB(B)
      • P(j);OGATEB::B(A)
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