MESON Chess Problem Database

Problem Display
PID: 173587 (8/8/8/3p4/3K4/6Q1/6b1/5NkN w - - 0 1)

Boros, Sandor

Magyar Sakkvilag, 1926

8/8/8/3p4/3K4/6Q1/6b1/5NkN

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf1
      • 2.Qf2#
    • 1...Kxh1
      • 2.Qh2#
  • Tries
    • 1.Kc3?
      • 1...Kxf1
        • 2.Qf2#
      • 1...Kxh1
        • 2.Qh2#
      • 1...d4+!
    • 1.Kd3?
      • 1...Kxf1
        • 2.Qf2#
      • 1...Kxh1
        • 2.Qh2#
      • 1...d4!
    • 1.Ke3?
      • 1...Kxf1
        • 2.Qf2#
      • 1...Kxh1
        • 2.Qh2#
      • 1...d4+!
    • 1.Kc5?
      • 1...Kxf1
        • 2.Qf2#
      • 1...Kxh1
        • 2.Qh2#
      • 1...d4!
    • 1.Ke5?
      • 1...Kxf1
        • 2.Qf2#
      • 1...Kxh1
        • 2.Qh2#
      • 1...d4!
    • 1.Qe3+?
      • 1...Kxf1
        • 2.Sg3#
        • 2.Qf2#
      • 1...Kxh1!
    • 1.Qg4?
      • 1...Kxf1
        • 2.Qd1#
      • 1...Kxh1!
  • Keys
    • 1.Se3!
      • 1...Kxh1
        • 2.Qxg2#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINB(b),P-FLIGHT,XS(A)::QAR1(C)
    • K(a);N_SPINB(b),P-FLIGHT,XS(B)::QAR1(C)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT,XS(A)::QAR1(C)
        • K(a);N_SPINB(b),P-FLIGHT,XS(B)::QAR1(C)
      • Refutation
        • P(c);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT,XS(A)::QAR1(C)
        • K(a);N_SPINB(b),P-FLIGHT,XS(B)::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT,XS(A)::QAR1(C)
        • K(a);N_SPINB(b),P-FLIGHT,XS(B)::QAR1(C)
      • Refutation
        • P(c);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT,XS(A)::QAR1(C)
        • K(a);N_SPINB(b),P-FLIGHT,XS(B)::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT,XS(A)::QAR1(C)
        • K(a);N_SPINB(b),P-FLIGHT,XS(B)::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK,N_PINB(b)
      • Refutation
        • K(a);P-FLIGHT,XS(B)
    • Try
      • Q(C);
      • Vars
        • K(a);N_SPINB(b),OGATEB,P-FLIGHT,XS(A)::QAR2(C)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT,XS(B)
  • Actual
    • S(A);
    • Vars
      • K(a);N_SPINB(b),P-FLIGHT,XS(B)::QAB1(C),XB(b)
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