MESON Chess Problem Database

Problem Display
PID: 73339 (2Nr4/2RN3B/1BKP1p2/3p1p2/1pkP3R/1rpp4/1PPbP3/nb1Q1q2 w - - 0 1)

Degener, Udo

Degenkolbe, Mirko

2nd Prize, Sachsische Zeitung, 1993

2Nr4/2RN3B/1BKP1p2/3p1p2/1pkP3R/1rpp4/1PPbP3/nb1Q1q2

#2

13 + 13

6113 Problemschach-Jahrbuch (1993) 1994

SOLUTION

  • SOUND
  • Sets
    • 1...Qg2
      • 2.exd3#
    • 1...Qxd1
      • 2.exd3#
    • 1...Qe1
      • 2.exd3#
    • 1...Qg1
      • 2.exd3#
    • 1...Qh1
      • 2.exd3#
    • 1...Qf2
      • 2.exd3#
    • 1...Qf4
      • 2.exd3#
    • 1...Ba2
      • 2.cxd3#
    • 1...Bc1
      • 2.Qxd3#
    • 1...Be1
      • 2.Qxd3#
    • 1...Be3
      • 2.Qxd3#
    • 1...Bf4
      • 2.Qxd3#
    • 1...Bg5
      • 2.Qxd3#
    • 1...Bh6
      • 2.Qxd3#
    • 1...f4
      • 2.Bxd3#
  • Tries
    • 1.Bc5?
      • threat
        • 2.Sdb6#
        • 2.Scb6#
      • 1...Rxd7
        • 2.Sb6#
      • 1...Rxc8
        • 2.Sb6#
      • 1...cxb2!
  • Keys
    • 1.Ba7!
      • threat
        • 2.Kb6#
        • 2.Sdb6#
        • 2.Scb6#
      • 1...Rxd7
        • 2.Sb6#
      • 1...Rxc8
        • 2.Sb6#
      • 1...cxb2
        • 2.Kb6#
      • 1...Qf4
        • 2.exd3#
      • 1...Bf4
        • 2.Qxd3#
      • 1...f4
        • 2.Bxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 12
  • Sets
    • Q(c);N_GUARD::P(D),XP(g)
    • Q(c);N_GUARD,XQ(A)::P(D),XP(g)
    • B(b);N_GUARD::P(C),XP(g)
    • B(d);OGATE::QAB1(A),XP(g)
    • P(k);OGATE::B(L),XP(g)
  • Tries
    • Try
      • B(G);
      • Threat
        • DUALS(2)
      • Vars
        • R(m);XS(K)::S(M)
        • R(m);P_PINR(J),XS(M)::S(K)
      • Refutation
        • P(f);XP(B)
  • Actual
    • B(G);
    • Threat
      • DUALS(3)
    • Vars
      • R(m);XS(K)::S(M)
      • R(m);P_PINR(J),XS(M)::S(K)
      • P(f);XP(B)::R(J)+K(H)
      • Q(c);N_GUARD::P(D),XP(g)
      • B(d);OGATE::QAB1(A),XP(g)
      • P(k);OGATE::B(L),XP(g)
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