MESON Chess Problem Database

Problem Display
PID: 174930 (8/K3p3/8/1PpkPB2/3P4/3Q4/8/8 w - - 0 1)

Mann, Carel Christiaan Wilhelm

Tijdschrift vd NSB, 1901

8/K3p3/8/1PpkPB2/3P4/3Q4/8/8

#2

6 + 3

6490 yacpdb 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qe4#
    • 1...e6
      • 2.Be4#
  • Tries
    • 1.Ka6?
      • 1...c4
        • 2.Qe4#
      • 1...e6
        • 2.Be4#
      • 1...cxd4!
    • 1.Kb6?
      • 1...c4
        • 2.Qe4#
      • 1...e6
        • 2.Be4#
      • 1...cxd4!
    • 1.Kb7?
      • 1...c4
        • 2.Qe4#
      • 1...e6
        • 2.Be4#
      • 1...cxd4!
    • 1.Ka8?
      • 1...c4
        • 2.Qe4#
      • 1...e6
        • 2.Be4#
      • 1...cxd4!
    • 1.Kb8?
      • 1...c4
        • 2.Qe4#
      • 1...e6
        • 2.Be4#
      • 1...cxd4!
  • Keys
    • 1.b6!
      • 1...Kc6
        • 2.d5#
      • 1...cxd4
        • 2.Qb5#
      • 1...c4
        • 2.Qe4#
      • 1...e6
        • 2.Be4#

This anticipates 189429(1911), 195836(1942)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::QAB1(A)
    • P(c);SBLOCK::B(E)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • P(a);SBLOCK::QAB1(A)
        • P(c);SBLOCK::B(E)
      • Refutation
        • P(a);P_SPINP(a),XP(B)
    • Try
      • K(F);S_FLIGHT
      • Vars
        • P(a);SBLOCK::QAB1(A)
        • P(c);SBLOCK::B(E)
      • Refutation
        • P(a);P_SPINP(a),XP(B)
    • Try
      • K(F);P-FLIGHT
      • Vars
        • P(a);SBLOCK::QAB1(A)
        • P(c);SBLOCK::B(E)
      • Refutation
        • P(a);P_SPINP(a),XP(B)
    • Try
      • K(F);P-FLIGHT
      • Vars
        • P(a);SBLOCK::QAB1(A)
        • P(c);SBLOCK::B(E)
      • Refutation
        • P(a);P_SPINP(a),XP(B)
    • Try
      • K(F);S_FLIGHT
      • Vars
        • P(a);SBLOCK::QAB1(A)
        • P(c);SBLOCK::B(E)
      • Refutation
        • P(a);P_SPINP(a),XP(B)
  • Actual
    • P(C);
    • Vars
      • K(b);OGATE,S_FLIGHT::P(B)
      • P(a);OGATEB,P_SPINP(a),SBLOCK,XP(B)::QAR2(A)
      • P(a);SBLOCK::QAB1(A)
      • P(c);SBLOCK::B(E)
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