MESON Chess Problem Database

Problem Display
PID: 143798 (7B/8/8/QKpr3N/1pB1k1P1/1N3pP1/1b1p1P2/6q1 w - - 0 1)

Niestroj, Georg

Troll, 2011

7B/8/8/QKpr3N/1pB1k1P1/1N3pP1/1b1p1P2/6q1

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sxc5#
    • 1...Rd4
      • 2.Sxc5#
    • 1...Re5
      • 2.Sf6#
    • 1...Rf5
      • 2.Sxd2#
    • 1...Rg5
      • 2.Sxd2#
    • 1...Rxh5
      • 2.Sxd2#
    • 1...Rd6
      • 2.Sxc5#
    • 1...Rd7
      • 2.Sxc5#
    • 1...Rd8
      • 2.Sxc5#
    • 1...Bd4
      • 2.Sxd2#
  • Tries
    • 1.Qa8?
      • threat
        • 2.Sxd2#
        • 2.Sxc5#
        • 2.Qxd5#
      • 1...Bxh8
        • 2.Qxd5#
      • 1...Bf6
        • 2.Qxd5#
      • 1...Bg7
        • 2.Qxd5#
      • 1...d1Q
        • 2.Sxc5#
      • 1...d1S
        • 2.Sd2#
        • 2.Sxc5#
        • 2.Qxd5#
      • 1...d1B
        • 2.Sd2#
        • 2.Sxc5#
        • 2.Qxd5#
      • 1...d1R
        • 2.Sxc5#
      • 1...Qc1
        • 2.Sxc5#
        • 2.Qxd5#
      • 1...Qd1
        • 2.Sxc5#
        • 2.Qxd5#
      • 1...Qe1
        • 2.Sxc5#
        • 2.Qxd5#
      • 1...Bc1
        • 2.Sxc5#
        • 2.Qxd5#
      • 1...Bc3
        • 2.Sxc5#
        • 2.Qxd5#
      • 1...Bd4
        • 2.Sxd2#
        • 2.Qxd5#
      • 1...Be5
        • 2.Qxd5#
      • 1...Qxf2!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qf4#
      • 1...Qxg3
        • 2.Sxg3#
      • 1...Re5
        • 2.Sf6#
      • 1...Rf5
        • 2.Sxd2#
      • 1...Rd6
        • 2.Sxc5#
      • 1...Be5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(h);N_GUARD::S(B),XP(g)
    • R(h);SBLOCK,S_CUTB(b)::S(H)
    • R(h);N_GUARD::S(B),XP(c)
    • R(h);N_GUARD,XS(H)::S(B),XP(c)
    • B(b);S_CUTR(h)::S(B),XP(c)
  • Tries
    • Try
      • Q(F);P_PINR(h)
      • Threat
        • DUALS(3)
      • Vars
        • B(b);XB(I)::QAB1(F),XR(h)
        • B(b);::QAB1(F),XR(h)
        • P(c);::S(B),XP(g)
      • Refutation
        • Q(a);XP(A)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • Q(a);XP(C)::S(H),XQ(a)
      • R(h);S_CUTB(b)::S(H)
      • R(h);N_GUARD::S(B),XP(c)
      • R(h);N_GUARD::S(B),XP(g)
      • B(b);S_CUTR(h)::QAB(F)
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