MESON Chess Problem Database

Problem Display
PID: 58850 (4BK2/8/1p5R/2kp1p2/2p1bN2/p1Q5/8/8 w - - 0 1)

Dittrich, Stefan

2nd Prize, diagrammes, 1980

4BK2/8/1p5R/2kp1p2/2p1bN2/p1Q5/8/8

#2

5 + 7

3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Sd3#
    • 1...Bg2
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Bf3
      • 2.Sd3#
    • 1...d4
      • 2.Qxa3#
    • 1...b5
      • 2.Rc6#
  • Tries
    • 1.Se2?
      • threat
        • 2.Qxa3#
      • 1...a2
        • 2.Qa3#
      • 1...b5
        • 2.Rc6#
      • 1...d4!
    • 1.Ba4?
      • threat
        • 2.Rc6#
      • 1...d4
        • 2.Qxa3#
      • 1...b5!
    • 1.Qb2?
      • threat
        • 2.Rc6#
        • 2.Qxb6#
      • 1...c3
        • 2.Qxc3#
      • 1...d4
        • 2.Qxa3#
        • 2.Qb5#
        • 2.Qxb6#
      • 1...b5
        • 2.Rc6#
      • 1...axb2!
    • 1.Qe3+?
      • 1...d4
        • 2.Qxa3#
      • 1...Kb4!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Se6#
      • 1...d4
        • 2.Qxa3#
      • 1...b5
        • 2.Rc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::S(B)
    • B(c);N_GUARD::S(B),XB(c)
    • P(e);SBLOCK::QAB(A),XP(a)
    • P(g);SBLOCK::R1(C)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAB(A),XP(a)
      • Vars
        • P(a);::QAB(A)
        • P(g);SBLOCK::R1(C)
      • Refutation
        • P(e);
    • Try
      • B(D);
      • Threat
        • R1(C)
      • Vars
        • P(e);SBLOCK::QAB(A),XP(a)
      • Refutation
        • P(g);
    • Try
      • Q(A);N_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
        • P(g);::R1(C)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK,N_PINP(b)
      • Vars
        • P(e);P_SPINP(e),SBLOCK::QAB(A),XP(a)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • K(E);S_FLIGHT
    • Threat
      • S(B)
    • Vars
      • P(e);SBLOCK::QAB(A),XP(a)
      • P(g);SBLOCK::R1(C)
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