MESON Chess Problem Database

Problem Display
PID: 202524 (8/4N3/5p2/2p2K2/2pk4/4p3/2Q5/8 w - - 0 1)

Kovacs, Florian Janos

Uj Nemezdek, 1923

8/4N3/5p2/2p2K2/2pk4/4p3/2Q5/8

#2

3 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e2
      • 2.Qd2#
    • 1...c3
      • 2.Qe4#
  • Tries
    • 1.Kf4?
      • 1...c3
        • 2.Qe4#
      • 1...e2
        • 2.Qd2#
      • 1...f5!
    • 1.Ke6?
      • threat
        • 2.Sf5#
        • 2.Sc6#
      • 1...e2
        • 2.Sf5#
      • 1...f5
        • 2.Sxf5#
        • 2.Sc6#
      • 1...c3!
    • 1.Sd5?
      • threat
        • 2.Qd1#
        • 2.Qe4#
      • 1...c3
        • 2.Qe4#
      • 1...e2
        • 2.Qe4#
        • 2.Qd2#
      • 1...Kxd5!
    • 1.Sg6?
      • 1...e2
        • 2.Qd2#
      • 1...c3
        • 2.Qe4#
      • 1...Kd5!
    • 1.Sg8?
      • 1...e2
        • 2.Qd2#
      • 1...c3
        • 2.Qe4#
      • 1...Kd5!
  • Keys
    • 1.Sc8!
      • 1...Kd5
        • 2.Qe4#
      • 1...e2
        • 2.Qd2#
      • 1...c3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);N_GUARD::QAR2(A)
    • P(b);SBLOCK::QAR1(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(b);SBLOCK::QAR1(A)
        • P(a);N_GUARD::QAR2(A)
      • Refutation
        • P(e);
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • P(a);::S(C)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT,XS(C)
    • Try
      • S(C);
      • Vars
        • P(a);N_GUARD::QAR2(A)
        • P(b);SBLOCK::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • S(C);
      • Vars
        • P(a);N_GUARD::QAR2(A)
        • P(b);SBLOCK::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(c);P-FLIGHT::QAB1(A)
      • P(a);N_GUARD::QAR2(A)
      • P(b);SBLOCK::QAR1(A)
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Developed and maintained by Brian Stephenson.
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