MESON Chess Problem Database

Problem Display
PID: 256866 (8/8/KN1Q4/8/8/1pk5/p1r1n3/n4R2 w - - 0 1)

Palkoska, Emil

Wiener Schachzeitung, 1903

(First published on Thu Jan 1 1903)

8/8/KN1Q4/8/8/1pk5/p1r1n3/n4R2

#2

4 + 6

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kb2
      • 2.Sa4#
    • 1...b2
      • 2.Rf3#
  • Tries
    • 1.Qb4+?
      • 1...Kb2
        • 2.Sa4#
      • 1...Kd3
        • 2.Rf3#
      • 1...Kxb4!
  • Keys
    • 1.Rd1!
      • 1...Kb2
        • 2.Sa4#
      • 1...Rc1
        • 2.Qd2#
      • 1...Rd2
        • 2.Qxd2#
      • 1...Rb2
        • 2.Qc5#
      • 1...Sc1
        • 2.Qd4#
      • 1...Sg1
        • 2.Qd4#
      • 1...Sg3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qd4#
      • 1...b2
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(f);N_GUARD,S_FLIGHT::S(C)
    • P(e);SBLOCK::R(A)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(f);N_GUARD,P_SPINP(e),S_FLIGHT::S(C)
        • K(f);N_GUARD,P-FLIGHT::R(A)
      • Refutation
        • K(f);S_FLIGHT,XQ(D)
  • Actual
    • R(A);
    • Vars
      • K(f);N_GUARD,S_FLIGHT::S(C)
      • R(c);N_GUARD::QAB1(D)
      • R(c);N_GUARD::QAB1(D),XR(c)
      • R(c);SBLOCK::QAR2(D)
      • S(d);N_GUARD::QAB1(D)
      • S(d);N_GUARD::QAB1(D),XS(d)
      • P(e);SBLOCK::R1(A)
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