MESON Chess Problem Database

Problem Display
PID: 99952 (3N4/8/N1p5/3kP3/2b1pP2/2P5/Bp1p4/1Q1K4 w - - 0 1)

Katko, Imre

Magyar Sakkvilag, 1923

3N4/8/N1p5/3kP3/2b1pP2/2P5/Bp1p4/1Q1K4

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxa2
      • 2.Qxa2#
    • 1...Bb3+
      • 2.Bxb3#
    • 1...e3
      • 2.Qd3#
    • 1...c5
      • 2.Sc7#
  • Tries
    • 1.Kxd2?
      • 1...Bxa2
        • 2.Qxa2#
      • 1...Bb3
        • 2.Bxb3#
      • 1...c5
        • 2.Sc7#
      • 1...e3+!
    • 1.Bb3?
      • 1...e3
        • 2.Qd3#
      • 1...c5
        • 2.Sc7#
      • 1...Bxb3+!
    • 1.Qxb2?
      • threat
        • 2.Qxd2#
      • 1...Bb3+
        • 2.Bxb3#
        • 2.Qxb3#
      • 1...Bxa2
        • 2.Qxa2#
      • 1...e3!
  • Keys
    • 1.Kc2!
      • 1...Bb3+
        • 2.Bxb3#
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1B+
        • 2.Qxd1#
      • 1...Bxa2
        • 2.Qxa2#
      • 1...e3
        • 2.Qh1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...c5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(c);N_SPINB(c),OGATE,XB(C)::QAB(A),XB(c)
    • B(c);CHECK,OGATEB::B(C),XB(c)
    • P(d);N_GUARD::QAR2(A)
    • P(f);SBLOCK::S(G)
  • Tries
    • Try
      • K(B);P-FLIGHT,XP(b)
      • Vars
        • B(c);N_SPINB(c),OGATE,XB(C)::QAB(A),XB(c)
        • B(c);OGATEB::B(C),XB(c)
        • P(f);SBLOCK::S(G)
      • Refutation
        • P(d);CHECK
    • Try
      • B(C);
      • Vars
        • P(d);N_GUARD::QAR2(A)
        • P(f);SBLOCK::S(G)
      • Refutation
        • B(c);CHECK,N_SPINB(c),XB(C)
    • Try
      • Q(A);XP(a)
      • Threat
        • QAR(A),XP(b)
      • Vars
        • B(c);N_SPINB(c),OGATE,XB(C)::QAB(A),XB(c)
      • Refutation
        • P(d);
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • B(c);CHECK,OGATEB::B(C),XB(c)
      • P(b);CHECK,OGATEB::QAR(A),XQ(b)
      • P(b);CHECK,OGATEB::QAR(A),XB(b)
      • B(c);N_SPINB(c),OGATE,XB(C)::QAB(A),XB(c)
      • P(d);OGATEB::QAB(A)
      • P(b);OGATEB::QAR(A),XS(b)
      • P(b);OGATEB::QAR(A),XR(b)
      • P(f);SBLOCK::S(G)
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