MESON Chess Problem Database

Problem Display
PID: 11239 (8/8/6Q1/8/7B/5R2/6q1/R3K1k1 w Q - 0 1)

Scheel, Johan

De Maasbode, 1937

8/8/6Q1/8/7B/5R2/6q1/R3K1k1

#2

5 + 2

4884 154 norske miniatyrproblemer 1974
2012 Miniature Chess Problems from Many Countries 1981
3295 Einfuhrung in die Welt des Schachproblem 1984
3310 2345 Chess Problems 1997

SOLUTION

  • SOUND
  • Tries
    • 1.Ra2?
      • threat
        • 2.Qxg2#
      • 1...Kh1
        • 2.Qxg2#
      • 1...Kh2
        • 2.Qxg2#
      • 1...Qxg6
        • 2.Rf1#
      • 1...Qg4
        • 2.Rf1#
      • 1...Qg5
        • 2.Rf1#
      • 1...Qg3+!
    • 1.Rh3?
      • threat
        • 2.Bf2#
        • 2.0-0-0#
      • 1...Qg3+
        • 2.Qxg3#
      • 1...Qg4
        • 2.Qxg4#
      • 1...Qg5
        • 2.Qxg5#
      • 1...Qxg6!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Qxg2#
      • 1...Kh1
        • 2.Qxg2#
      • 1...Kh2
        • 2.Qxg2#
      • 1...Qxg6
        • 2.0-0-0#
      • 1...Qg3
        • 2.Ke2#
      • 1...Qg4
        • 2.Kd2#
      • 1...Qg5
        • 2.Ke2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR1(E),XQ(b)
      • Vars
        • K(a);N_SPINQ(b),P-FLIGHT::QAB1(E),XQ(b)
        • K(a);S_FLIGHT::QAR1(E),XQ(b)
        • Q(b);N_SPINQ(b),XQ(E)::R1(C)
        • Q(b);::R1(C)
      • Refutation
        • Q(b);CHECK
    • Try
      • R(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK,OGATEB::QAR2(E),XQ(b)
        • Q(b);OGATEB::QAR(E),XQ(b)
      • Refutation
        • Q(b);N_SPINQ(b),XQ(E)
  • Actual
    • R(C);
    • Threat
      • QAR1(E),XQ(b)
    • Vars
      • K(a);N_SPINQ(b),P-FLIGHT::QAB1(E),XQ(b)
      • K(a);S_FLIGHT::QAR1(E),XQ(b)
      • Q(b);N_SPINQ(b),XQ(E)::0-0-0
      • Q(b);P_PINR(C)::R(A)+K(B)
      • Q(b);::R(A)+K(B)
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