MESON Chess Problem Database

Problem Display
PID: 61907 (1q4r1/bp5b/1P5N/1R6/1QP2kp1/r3N1R1/7P/n5KB w - - 0 1)

Gruber, Hans

Rehm, Hans Peter

4th HM., Eretria 5 Days Ty., 2005

1q4r1/bp5b/1P5N/1R6/1QP2kp1/r3N1R1/7P/n5KB

#2

10 + 9

5673 Eretria Bulletin 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Qxd6#
    • 1...Qa8
      • 2.Qd6#
    • 1...Qc8
      • 2.Qd6#
    • 1...Rg6
      • 2.Rf5#
    • 1...Bf5
      • 2.Rxf5#
  • Tries
    • 1.Qe7?
      • threat
        • 2.Sg2#
        • 2.Sd5#
      • 1...Rxe3
        • 2.Qxe3#
      • 1...Qe5
        • 2.Qxe5#
      • 1...Qd6
        • 2.Sg2#
        • 2.Qxd6#
      • 1...Qd8
        • 2.Sg2#
        • 2.Qe5#
      • 1...Ra2
        • 2.Sd5#
      • 1...Rd3
        • 2.Sg2#
      • 1...Rg5
        • 2.Sg2#
        • 2.Qxg5#
      • 1...Rd8
        • 2.Sg2#
        • 2.Rxg4#
        • 2.Qg5#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bxb6!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qf2#
      • 1...Rxe3
        • 2.Qxe3#
      • 1...Qe5
        • 2.Sd5#
      • 1...Bf5
        • 2.Rxf5#
      • 1...Ra2
        • 2.Sc2#
      • 1...Be4
        • 2.Sg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • Q(h);N_GUARD::QAB(F),XQ(h)
    • Q(h);N_GUARD::QAB(F)
    • R(i);S_CUTB(g)::R1(H)
    • B(g);N_GUARD::R1(H),XB(g)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(b);OGATE,XS(D)::QAB1(F),XR(b)
        • Q(h);N_GUARD::QAB1(F),XQ(h)
        • R(b);::S(D)
        • B(g);N_GUARD::QAR1(F),XB(g)
      • Refutation
        • B(e);P_PINS(D),XP(I)
  • Actual
    • Q(F);
    • Threat
      • QAR2(F)
    • Vars
      • R(b);OGATE,P_SPINR(b),XS(D)::QAB1(F),XR(b)
      • Q(h);SBLOCK::QAB(F)+S(D),DCHECK
      • B(g);N_GUARD::R1(H),XB(g)
      • R(b);N_GUARD::QAB(F)+S(D)
      • B(g);SBLOCK::QAB(F)+S(D),DCHECK
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