MESON Chess Problem Database

Problem Display
PID: 129829 (8/8/8/2p5/K1Q5/1n4N1/1B1P4/n2k4 w - - 0 1)

Sulc, Jindrich

Ruch, 1947

8/8/8/2p5/K1Q5/1n4N1/1B1P4/n2k4

#2

5 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke1
      • 2.Qe2#
    • 1...Kxd2
      • 2.Qe2#
    • 1...Sc2
      • 2.Qe2#
    • 1...Sc1
      • 2.Qxc1#
    • 1...Sxd2
      • 2.Qc1#
    • 1...Sd4
      • 2.Qc1#
    • 1...Sa5
      • 2.Qc1#
  • Tries
    • 1.Ka3?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kxd2
        • 2.Qe2#
      • 1...Sxd2
        • 2.Qc1#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Sd4
        • 2.Qc1#
      • 1...Sa5
        • 2.Qc1#
      • 1...Sc2+!
    • 1.Kb5?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kxd2
        • 2.Qe2#
      • 1...Sxd2
        • 2.Qc1#
      • 1...Sc2
        • 2.Qe2#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Sa5
        • 2.Qc1#
      • 1...Sd4+!
    • 1.Ba3?
      • 1...Ke1
        • 2.Qe2#
      • 1...Sxd2
        • 2.Qc1#
      • 1...Sc2
        • 2.Qe2#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Sd4
        • 2.Qc1#
      • 1...Sa5
        • 2.Qc1#
      • 1...Kxd2!
    • 1.Qf1+?
      • 1...Kxd2
        • 2.Qe2#
      • 1...Kc2!
    • 1.Qg4+?
      • 1...Ke1
        • 2.Qe2#
      • 1...Kxd2
        • 2.Qe2#
      • 1...Kc2!
  • Keys
    • 1.d4!
      • threat
        • 2.Qe2#
      • 1...Ke1
        • 2.Qe2#
      • 1...Kd2
        • 2.Qe2#
      • 1...Sxd4
        • 2.Qc1#
      • 1...Sc1
        • 2.Qxc1#
      • 1...Sd2
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • K(b);P-FLIGHT::QAR1(E)
    • K(b);P-FLIGHT,XP(B)::QAR1(E)
    • S(a);SBLOCK::QAB1(E)
    • S(c);N_GUARD::QAR1(E),XS(c)
    • S(c);N_GUARD,XP(B)::QAR1(E)
    • S(c);N_GUARD::QAR1(E)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
        • K(b);P-FLIGHT,XP(B)::QAR1(E)
        • S(c);N_GUARD,XP(B)::QAR1(E)
        • S(c);N_GUARD::QAR1(E),XS(c)
        • S(c);N_GUARD::QAR1(E)
      • Refutation
        • S(a);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
        • K(b);P-FLIGHT,XP(B)::QAR1(E)
        • S(c);N_GUARD,XP(B)::QAR1(E)
        • S(a);SBLOCK::QAB1(E)
        • S(c);N_GUARD::QAR1(E),XS(c)
        • S(c);N_GUARD::QAR1(E)
      • Refutation
        • S(c);CHECK
    • Try
      • B(A);
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
        • S(c);N_GUARD,XP(B)::QAR1(E)
        • S(a);SBLOCK::QAB1(E)
        • S(c);N_GUARD::QAR1(E),XS(c)
        • S(c);N_GUARD::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(B)::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
        • K(b);P-FLIGHT,XP(B)::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(B);
    • Threat
      • QAB1(E)
    • Vars
      • K(b);P-FLIGHT::QAR1(E)
      • S(c);N_GUARD,XP(B)::QAR1(E)
      • S(c);N_GUARD::QAR1(E),XS(c)
      • S(c);N_GUARD::QAR1(E)
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