MESON Chess Problem Database

Problem Display
PID: 168912 (8/1N3K1B/6R1/4p1p1/2PPk2n/4pN2/2R3P1/1Q2n1B1 w - - 0 1)

Katko, Imre

La Settimana Enigmistica, 1932

(First published on Sat Aug 20 1932)

8/1N3K1B/6R1/4p1p1/2PPk2n/4pN2/2R3P1/1Q2n1B1

#2

11 + 6

14868 Pirnie Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sc5#
    • 1...Sxg2
      • 2.Rf6#
    • 1...g4
      • 2.Rxg4#
  • Tries
    • 1.Sd6+?
      • 1...Kd3
        • 2.Qd1#
        • 2.Qb3#
      • 1...Kf4!
    • 1.Rf6+?
      • 1...Sg6
        • 2.Sc5#
        • 2.Bxg6#
      • 1...Sf5!
  • Keys
    • 1.Bh2!
      • 1...Kd3
        • 2.Sc5#
      • 1...Kf5
        • 2.Rxg5#
      • 1...Sxc2
        • 2.Qxc2#
      • 1...Sexg2
        • 2.Rf2#
      • 1...Sexf3
        • 2.Rd2#
      • 1...Shxg2
        • 2.Rf6#
      • 1...Shxf3
        • 2.Rd6#
      • 1...Sxg6
        • 2.Bxg6#
      • 1...exd4
        • 2.Re6#
      • 1...e2
        • 2.Rxe2#
      • 1...Sd3
        • 2.Sd6#
      • 1...Sf5
        • 2.Sc5#
      • 1...g4
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(I)
    • S(d);N_GUARD,XP(D)::B(K)+R(H)
    • P(f);OGATE::B(K)+R(H),DCHECK,XP(f)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(H);CHECK
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • B(B);
    • Vars
      • K(c);S_FLIGHT::S(I)
      • K(c);S_FLIGHT::B(K)+R(H),DCHECK,XP(f)
      • S(a);OGATE,P_SPINS(a),XR(C)::QAB(A),XS(a)
      • S(a);N_GUARD,XP(D)::QAB(A)+R(C)
      • S(a);N_GUARD,XS(E)::QAB(A)+R(C)
      • S(d);N_GUARD,XP(D)::B(K)+R(H)
      • S(d);N_GUARD,XS(E)::B(K)+R(H)
      • S(d);OGATE,P_SPINS(d),XR(H)::B(K),XS(d)
      • P(e);XP(G)::B(K)+R(H),DCHECK
      • P(b);::QAB(A)+R(C),DCHECK,XP(b)
      • S(a);SBLOCK::S(I)
      • S(d);SBLOCK::S(I)
      • P(f);OGATE::B(K)+R(H),DCHECK,XP(f)
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