MESON Chess Problem Database

Problem Display
PID: 170194 (q2B4/pr1P4/2k1K3/R1N5/2p1p3/2R5/b2PrpN1/1Q5B w - - 0 1)

Uberwasser, Adrian

Tages-Anzeiger, 1987

q2B4/pr1P4/2k1K3/R1N5/2p1p3/2R5/b2PrpN1/1Q5B

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd8
      • 2.Qxb7#
    • 1...Rb5
      • 2.Qxb5#
    • 1...Rc7
      • 2.Qb5#
    • 1...Rxd7
      • 2.Qb5#
    • 1...e3
      • 2.Se1#
      • 2.Sxe3#
      • 2.Sf4#
      • 2.Sh4#
      • 2.Qe4#
  • Tries
    • 1.Qd3?
      • threat
        • 2.Qd5#
        • 2.Qd6#
      • 1...cxd3+
        • 2.Sb3#
      • 1...exd3+
        • 2.Se3#
      • 1...Qxd8
        • 2.Qd6#
      • 1...Rxd7
        • 2.Qxd7#
      • 1...Rc7
        • 2.Qd6#
      • 1...Qb8
        • 2.Qd5#
      • 1...Rxd2!
  • Keys
    • 1.d4!
      • threat
        • 2.d5#
      • 1...cxd4 ep+
        • 2.Sb3#
      • 1...exd4 ep+
        • 2.Se3#
      • 1...Qxd8
        • 2.Qxb7#
      • 1...Rxd7
        • 2.Ra6#
        • 2.Qb5#
      • 1...Rd2
        • 2.Qxe4#
      • 1...Rb5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(i);N_GUARD,XB(J)::QAB1(A),XR(h)
    • R(h);N_GUARD::QAB1(A),XR(h)
    • R(h);N_GUARD::QAB1(A)
    • R(h);N_GUARD,XP(I)::QAB1(A)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);CHECK,XQ(A)::R(E)+S(G)
        • P(e);CHECK,XQ(A)::B(B)+S(D)
        • Q(i);XB(J)::QAR1(A)
        • R(h);OGATE,XP(I)::QAB1(A),XR(h)
        • R(h);::QAR1(A)
        • Q(i);::QAB1(A)
      • Refutation
        • R(b);XP(C)
  • Actual
    • P(C);
    • Threat
      • P(C)
    • Vars
      • P(d);CHECK,EP,XP(C)::R(E)+S(G)
      • P(e);CHECK,EP,XP(C)::B(B)+S(D)
      • Q(i);N_GUARD,XB(J)::QAB1(A),XR(h)
      • R(b);N_GUARD::QAB(A),XP(e)
      • R(h);N_GUARD::QAB1(A),XR(h)
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