MESON Chess Problem Database

Problem Display
PID: 122515 (Bb5Q/3pNb2/8/1p1pn3/1R1PkNp1/4p1P1/KnP3P1/B3R3 w - - 0 1)

Bruch, Wieland

Source?, 1991

Bb5Q/3pNb2/8/1p1pn3/1R1PkNp1/4p1P1/KnP3P1/B3R3

#2

12 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh5
      • 2.Bxd5#
    • 1...Bg6
      • 2.Bxd5#
    • 1...Be8
      • 2.Bxd5#
    • 1...Ba7
      • 2.Qxe5#
    • 1...Sd1
      • 2.dxe5#
    • 1...Sa4
      • 2.dxe5#
    • 1...e2
      • 2.Rxe2#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc3#
      • 1...Sd1
        • 2.dxe5#
      • 1...Sa4
        • 2.dxe5#
      • 1...Sbc4!
    • 1.Sh3?
      • threat
        • 2.Sf2#
        • 2.Sg5#
      • 1...e2
        • 2.Rxe2#
      • 1...Sd1
        • 2.Sg5#
        • 2.dxe5#
      • 1...Sbd3
        • 2.Sg5#
      • 1...Sed3
        • 2.Sg5#
      • 1...Sf3
        • 2.Sf2#
      • 1...gxh3!
    • 1.Sh5?
      • threat
        • 2.Sf6#
      • 1...Bxh5
        • 2.Bxd5#
      • 1...e2
        • 2.Rxe2#
      • 1...Sec4!
    • 1.Qh7+?
      • 1...Bg6
        • 2.Bxd5#
      • 1...Sg6!
  • Keys
    • 1.Sfxd5!
      • threat
        • 2.Rxe3#
      • 1...Bxd5+
        • 2.Bxd5#
      • 1...Sd1
        • 2.dxe5#
      • 1...Sbc4
        • 2.Sf6#
      • 1...Sec4
        • 2.Sc3#
      • 1...e2
        • 2.Rxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(i);N_GUARD::B(K),XP(f)
    • B(j);N_GUARD::QAR1(L),XS(g)
    • S(a);N_GUARD::R(G)+P(H),XS(g)
    • P(b);OGATEB::R(B),XP(b)
  • Tries
    • Try
      • S(I);N_PINP(b),P_PINP(f)
      • Threat
        • S(I)
      • Vars
        • S(a);N_GUARD::R(G)+P(H),XS(g)
      • Refutation
        • S(a);
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB::R(B),XP(b)
        • S(a);::S(I)
        • S(g);::S(I)
      • Refutation
        • P(d);XS(I)
    • Try
      • S(I);
      • Threat
        • S(I)
      • Vars
        • B(i);N_GUARD,XS(I)::B(K),XP(f)
        • P(b);OGATEB::R(B),XP(b)
      • Refutation
        • S(g);
    • Try
      • Q(L);CHECK
      • Vars
        • B(i);P_SPINB(i)::B(K),XP(f)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • S(I);P_SPINS(I),XP(f)
    • Threat
      • R1(B),XP(b)
    • Vars
      • B(i);CHECK,OGATE,P_SPINB(i),XS(I)::B(K),XB(i)
      • S(a);N_GUARD::R(G)+P(H),XS(g)
      • S(a);N_PINS(I)::B(K)+S(I),DCHECK
      • S(g);N_PINS(I)::B(K)+S(I),DCHECK
      • P(b);OGATEB::R(B),XP(b)
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