MESON Chess Problem Database

Problem Display
PID: 180929 (4R1K1/3p4/N1p5/2Pkpp2/4b2Q/1P6/3P4/8 w - - 0 1)

Preiswerk, Walther Edouard

Berner Heim, 1903

4R1K1/3p4/N1p5/2Pkpp2/4b2Q/1P6/3P4/8

#2

7 + 6

16108 Walther Preiswerks Shachprobleme (M. Henneberger) 1949

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qc4#
    • 1...Bh1
      • 2.Qc4#
    • 1...Bc2
      • 2.Qc4#
    • 1...Bg2
      • 2.Qc4#
    • 1...Bf3
      • 2.Qc4#
  • Tries
    • 1.Sb4+?
      • 1...Kd4
        • 2.Qf2#
      • 1...Kxc5!
    • 1.Qf6?
      • threat
        • 2.Qxe5#
        • 2.Qd6#
      • 1...Bb1
        • 2.Qxe5#
      • 1...Bh1
        • 2.Qxe5#
      • 1...Bc2
        • 2.Qxe5#
      • 1...Bg2
        • 2.Qxe5#
      • 1...Bd3
        • 2.Qxe5#
      • 1...Bf3
        • 2.Qxe5#
      • 1...d6
        • 2.Qxd6#
      • 1...Kd4!
    • 1.Qe7?
      • threat
        • 2.Qd6#
        • 2.Qxe5#
        • 2.Qxd7#
      • 1...Bb1
        • 2.Qxe5#
      • 1...Bh1
        • 2.Qxe5#
      • 1...Bc2
        • 2.Qxe5#
      • 1...Bg2
        • 2.Qxe5#
      • 1...Bd3
        • 2.Qxe5#
      • 1...Bf3
        • 2.Qxe5#
      • 1...d6
        • 2.Qxd6#
      • 1...Kd4!
  • Keys
    • 1.Re6!
      • threat
        • 2.Rd6#
      • 1...Kd4
        • 2.Rd6#
      • 1...Kxe6
        • 2.Sc7#
      • 1...dxe6
        • 2.Qd8#
      • 1...d6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • B(a);OGATE::QAB1(C)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::QAB(C)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::QAR1(C),XP(c)
        • P(f);::QAR1(C),XP(f)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);::QAR1(C),XP(c)
        • P(f);::QAR1(C),XP(f)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(F);
    • Threat
      • R1(F)
    • Vars
      • K(b);P-FLIGHT,P_SPINB(a)::R(F)
      • K(b);S_FLIGHT,XR(F)::S(E)
      • P(f);OGATEB,SBLOCK,XR(F)::QAR(C)
      • P(f);::R1(F),XP(f)
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