MESON Chess Problem Database

Problem Display
PID: 203623 (8/4K3/3N4/4k1p1/1p3p1p/1Bp1P2P/6PQ/2B5 w - - 0 1)

Kovacs, Florian Janos

Uj Nemezdek, 1924

8/4K3/3N4/4k1p1/1p3p1p/1Bp1P2P/6PQ/2B5

#2

8 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c2
      • 2.Bb2#
    • 1...g4
      • 2.Qxf4#
  • Tries
    • 1.Kd7?
      • 1...c2
        • 2.Bb2#
      • 1...g4
        • 2.Qxf4#
      • 1...Kf6!
    • 1.Sf7+?
      • 1...Kf5
        • 2.Bc2#
      • 1...Ke4!
    • 1.Bb2?
      • 1...g4
        • 2.Qxf4#
      • 1...cxb2!
    • 1.Ba3?
      • 1...c2
        • 2.Bb2#
      • 1...g4
        • 2.Qxf4#
      • 1...bxa3!
    • 1.Ba2?
      • 1...c2
        • 2.Bb2#
      • 1...g4
        • 2.Qxf4#
      • 1...b3!
    • 1.Bc4?
      • 1...c2
        • 2.Bb2#
      • 1...g4
        • 2.Qxf4#
      • 1...b3!
    • 1.Be6?
      • 1...c2
        • 2.Bb2#
      • 1...g4
        • 2.Qxf4#
      • 1...b3!
    • 1.Bf7?
      • 1...c2
        • 2.Bb2#
      • 1...g4
        • 2.Qxf4#
      • 1...b3!
    • 1.Bg8?
      • 1...c2
        • 2.Bb2#
      • 1...g4
        • 2.Qxf4#
      • 1...b3!
    • 1.exf4+?
      • 1...gxf4
        • 2.Qxf4#
      • 1...Kd4!
  • Keys
    • 1.Qg1!
      • 1...fxe3
        • 2.Qxe3#
      • 1...c2
        • 2.Bb2#
      • 1...f3
        • 2.Qh2#
      • 1...g4
        • 2.exf4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::B(A)
    • P(f);N_GUARD::QAB1(C),XP(c)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • P(a);OGATEB::B(A)
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • K(e);N_SPINP(c),S_FLIGHT
    • Try
      • S(G);CHECK
      • Vars
        • K(e);N_SPINP(c),P-FLIGHT::B(D)
      • Refutation
        • K(e);N_SPINP(c),P-FLIGHT
    • Try
      • B(A);N_PINP(c),P_PINP(a)
      • Vars
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • P(a);N_SPINP(a),P_SPINP(c),XB(A)
    • Try
      • B(A);
      • Vars
        • P(a);OGATEB::B(A)
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • P(b);XB(A)
    • Try
      • B(D);
      • Vars
        • P(a);OGATEB::B(A)
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • P(a);OGATEB::B(A)
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • P(a);OGATEB::B(A)
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • P(a);OGATEB::B(A)
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • P(a);OGATEB::B(A)
        • P(f);N_GUARD::QAB1(C),XP(c)
      • Refutation
        • P(b);
    • Try
      • P(E);CHECK,XP(c)
      • Vars
        • P(f);OGATE,P_SPINP(f),XP(E)::QAB1(C),XP(f)
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • Q(C);N_PINP(c)
    • Vars
      • P(c);OGATE,XP(E)::QAR2(C),XP(c)
      • P(a);OGATEB::B(A)
      • P(c);OGATEB::QAB(C)
      • P(f);N_GUARD::P(E),XP(c)
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Developed and maintained by Brian Stephenson.
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