MESON Chess Problem Database

Problem Display
PID: 92264 (8/8/8/8/2nQ4/8/2pp1K2/2Bk4 w - - 0 1)

Limbach, Saturnin

Deutsche Schachzeitung, 1939

8/8/8/8/2nQ4/8/2pp1K2/2Bk4

#2

3 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc1
      • 2.Qa1#
    • 1...Sb2
      • 2.Qxd2#
    • 1...Sa3
      • 2.Qxd2#
    • 1...Se3
      • 2.Qxd2#
    • 1...Sa5
      • 2.Qxd2#
    • 1...Se5
      • 2.Qxd2#
    • 1...Sb6
      • 2.Qxd2#
    • 1...Sd6
      • 2.Qxd2#
  • Tries
    • 1.Kf1?
      • 1...Kxc1
        • 2.Qa1#
      • 1...Sb2
        • 2.Qxd2#
      • 1...Sa3
        • 2.Qxd2#
      • 1...Sa5
        • 2.Qxd2#
      • 1...Se5
        • 2.Qxd2#
      • 1...Sb6
        • 2.Qxd2#
      • 1...Sd6
        • 2.Qxd2#
      • 1...Se3+!
    • 1.Kf3?
      • threat
        • 2.Qg1#
      • 1...Kxc1
        • 2.Qa1#
      • 1...Ke1
        • 2.Qg1#
      • 1...Se3
        • 2.Qxd2#
      • 1...Se5+!
    • 1.Qd3?
      • threat
        • 2.Qf1#
      • 1...Se3
        • 2.Qxd2#
      • 1...Kxc1!
    • 1.Qd5?
      • threat
        • 2.Qh1#
      • 1...Se3
        • 2.Qxd2#
      • 1...Kxc1!
  • Keys
    • 1.Qc3!
      • 1...Kxc1
        • 2.Qa1#
      • 1...dxc1Q
        • 2.Qe1#
      • 1...dxc1S
        • 2.Qe1#
      • 1...dxc1B
        • 2.Qe1#
      • 1...dxc1R
        • 2.Qe1#
      • 1...Sb2
        • 2.Qxd2#
      • 1...Sa3
        • 2.Qxd2#
      • 1...Se3
        • 2.Qxd2#
      • 1...Sa5
        • 2.Qxd2#
      • 1...Se5
        • 2.Qxd2#
      • 1...Sb6
        • 2.Qxd2#
      • 1...Sd6
        • 2.Qxd2#

This is a version of 11549

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(c),OGATEB,P-FLIGHT,XB(A)::QAR2(C)
    • S(d);N_GUARD::QAR1(C),XP(c)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);N_SPINP(c),OGATEB,P-FLIGHT,XB(A)::QAR2(C)
        • S(d);N_GUARD::QAR1(C),XP(c)
      • Refutation
        • S(d);CHECK
    • Try
      • K(B);P-FLIGHT
      • Threat
        • QAR(C)
      • Vars
        • K(a);N_SPINP(c),OGATEB,P-FLIGHT,XB(A)::QAR2(C)
        • K(a);N_SPINP(c),P-FLIGHT::QAR2(C)
        • S(d);N_GUARD::QAR1(C),XP(c)
      • Refutation
        • S(d);CHECK
    • Try
      • Q(C);
      • Threat
        • QAR2(C)
      • Vars
        • S(d);N_GUARD::QAR1(C),XP(c)
      • Refutation
        • K(a);N_SPINP(c),P-FLIGHT,XB(A)
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • S(d);N_GUARD::QAR1(C),XP(c)
      • Refutation
        • K(a);N_SPINP(c),P-FLIGHT,XB(A)
  • Actual
    • Q(C);N_PINP(c)
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINP(b),XB(A)::QAR2(C)
      • P(c);OGATE,SBLOCK,XB(A)::QAR1(C)
      • S(d);N_GUARD::QAR1(C),XP(c)
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