MESON Chess Problem Database

Problem Display
PID: 244400 (5b2/3pr3/p4R1q/1p2P1rN/2N1k3/1Q1p4/1K3B2/8 w - - 0 1)

Dittrich, Stefan

Themes-64, 1979

5b2/3pr3/p4R1q/1p2P1rN/2N1k3/1Q1p4/1K3B2/8

#2

7 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qxd3#
    • 1...Rgxe5
      • 2.Sd6#
    • 1...Rexe5
      • 2.Sd2#
    • 1...d2
      • 2.Qf3#
    • 1...d5
      • 2.Rf4#
  • Tries
    • 1.Sb6?
      • threat
        • 2.Qd5#
      • 1...Kxe5
        • 2.Qd5#
      • 1...Rgxe5
        • 2.Sg3#
        • 2.Qb4#
      • 1...Rexe5
        • 2.Rf4#
      • 1...d5
        • 2.Qxd5#
      • 1...Qxf6!
    • 1.Sg3+?
      • 1...Kd5
        • 2.Qxd3#
      • 1...Rxg3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qd5#
      • 1...Kd4
        • 2.Qd5#
      • 1...Kxe5
        • 2.Qd5#
      • 1...Rgxe5
        • 2.Qb4#
      • 1...Rexe5
        • 2.Rf4#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(b);S_FLIGHT::QAR2(C),XP(a)
    • R(d);SBLOCK,XP(E)::S(D)
    • R(h);SBLOCK,XP(E)::S(D)
    • P(a);OGATE::QAB1(C)
    • P(g);SBLOCK::R1(G)
  • Tries
    • Try
      • S(D);
      • Threat
        • QAB1(C)
      • Vars
        • K(b);P-FLIGHT,XP(E)::QAR1(C)
        • R(h);SBLOCK,XP(E)::R1(G)
        • P(g);::QAB1(C),XP(g)
      • Refutation
        • Q(f);P_PINP(E),XR(G)
    • Try
      • S(F);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(C),XP(a)
      • Refutation
        • R(d);XS(F)
  • Actual
    • S(D);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);P-FLIGHT,XP(E)::QAR1(C)
      • R(d);SBLOCK,XP(E)::QAR(C)
      • R(h);SBLOCK,XP(E)::R1(G)
      • P(g);::QAB1(C),XP(g)
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