MESON Chess Problem Database

Problem Display
PID: 110751 (8/3B4/8/2Pkp3/N2p2K1/1P6/3Q4/8 w - - 0 1)

Zhukovin, Konstantin

Komsomolets Donbassa, 1954

8/3B4/8/2Pkp3/N2p2K1/1P6/3Q4/8

#2

6 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bc6#
    • 1...d3
      • 2.Qxd3#
    • 1...e4
      • 2.Qg5#
  • Tries
    • 1.Kf3?
      • 1...d3
        • 2.Qxd3#
      • 1...e4+!
    • 1.Kg3?
      • 1...d3
        • 2.Qxd3#
      • 1...e4
        • 2.Qg5#
      • 1...Ke4!
    • 1.Kh3?
      • 1...d3
        • 2.Qxd3#
      • 1...e4
        • 2.Qg5#
      • 1...Ke4!
    • 1.Kh4?
      • 1...d3
        • 2.Qxd3#
      • 1...e4
        • 2.Qg5#
      • 1...Ke4!
    • 1.Kf5?
      • 1...d3
        • 2.Qxd3#
      • 1...e4!
    • 1.Kg5?
      • 1...Ke4
        • 2.Bc6#
      • 1...d3
        • 2.Qxd3#
      • 1...e4!
    • 1.Kh5?
      • 1...d3
        • 2.Qxd3#
      • 1...e4
        • 2.Qg5#
      • 1...Ke4!
    • 1.Sb6+?
      • 1...Ke4
        • 2.Bf5#
        • 2.Bc6#
        • 2.Qe2#
      • 1...Kxc5!
    • 1.Qc1?
      • 1...d3
        • 2.Qc4#
      • 1...e4
        • 2.Qg5#
      • 1...Ke4!
    • 1.Qe3?
      • 1...e4
        • 2.Qg5#
      • 1...d3
        • 2.Sc3#
        • 2.Sb6#
        • 2.Qxd3#
      • 1...dxe3!
    • 1.Qf4?
      • 1...e4
        • 2.Qg5#
        • 2.Qd6#
        • 2.Qf5#
      • 1...d3
        • 2.Qc4#
      • 1...exf4!
    • 1.Qd1?
      • 1...Ke4
        • 2.Qf3#
      • 1...d3
        • 2.Qxd3#
      • 1...e4!
    • 1.Qc2?
      • threat
        • 2.Sb6#
      • 1...d3
        • 2.Qxd3#
        • 2.Qc4#
      • 1...e4!
    • 1.Qe2?
      • 1...d3
        • 2.Qxd3#
      • 1...e4!
  • Keys
    • 1.Qf2!
      • 1...Ke4
        • 2.Qf3#
      • 1...e4
        • 2.Qf5#
      • 1...d3
        • 2.Sc3#

Anticipated by 87960(1950)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(a),S_FLIGHT::B(F)
    • P(a);OGATEB::QAR2(A),XP(a)
    • P(c);OGATEB,SBLOCK::QAR(A)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);CHECK
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::B(F)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,XP(E)
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);::QAB1(A)
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(c);OGATEB,SBLOCK::QAR(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);OGATE::QAB1(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • S(C)
      • Refutation
        • P(c);
    • Try
      • Q(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::QAR2(A),XP(a)
      • Refutation
        • P(c);
  • Actual
    • Q(A);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • P(c);OGATEB::QAR2(A)
      • P(a);N_GUARD::S(C)
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