MESON Chess Problem Database

Problem Display
PID: 258123 (8/Q7/3Np3/2p5/1NPk4/1p2R3/8/5nK1 w - - 0 1)

Kuijers, LA

Berliner Morgenpost, 1908

8/Q7/3Np3/2p5/1NPk4/1p2R3/8/5nK1

#2

6 + 5

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...b2
      • 2.Sc2#
    • 1...e5
      • 2.Rd3#
  • Tries
    • 1.Kxf1?
      • 1...b2
        • 2.Sc2#
      • 1...e5
        • 2.Rd3#
      • 1...Kxe3!
    • 1.Rf3?
      • threat
        • 2.Sc6#
      • 1...Ke5
        • 2.Qxc5#
      • 1...Se3!
    • 1.Qa1+?
      • 1...b2
        • 2.Sc2#
      • 1...Kxe3!
    • 1.Qg7+?
      • 1...e5
        • 2.Rd3#
        • 2.Qxe5#
      • 1...Kxe3!
  • Keys
    • 1.Qa2!
      • 1...Kxe3
        • 2.Qf2#
      • 1...Sxe3
        • 2.Qb2#
      • 1...bxa2
        • 2.Sc2#
      • 1...cxb4
        • 2.Qa7#
      • 1...Sd2
        • 2.Qxd2#
      • 1...Sh2
        • 2.Qd2#
      • 1...Sg3
        • 2.Qd2#
      • 1...b2
        • 2.Sc2#
      • 1...e5
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::S(C)
    • P(e);SBLOCK::R1(B)
  • Tries
    • Try
      • K(A);P-FLIGHT,XS(a)
      • Vars
        • P(b);N_GUARD::S(C)
        • P(e);SBLOCK::R1(B)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • R(B);
      • Threat
        • S(C)
      • Vars
        • K(c);N_GUARD,N_SPINP(d),S_FLIGHT::QAR2(F),XP(d)
      • Refutation
        • S(a);
    • Try
      • Q(F);CHECK,N_PINP(d)
      • Vars
        • P(b);P_SPINP(b)::S(C)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • Q(F);CHECK,N_PINP(d)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
  • Actual
    • Q(F);N_PINP(d)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(B)::QAB1(F)
      • S(a);SBLOCK,XR(B)::QAB(F)
      • P(b);N_GUARD,XQ(F)::S(C)
      • P(d);OGATEB,XS(C)::QAB(F)
      • S(a);N_GUARD::QAR2(F),XS(a)
      • S(a);N_GUARD::QAR2(F)
      • P(b);N_GUARD::S(C)
      • P(e);SBLOCK::R1(B)
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