MESON Chess Problem Database

Problem Display
PID: 246683 (8/8/8/3N1R2/3pk1KQ/4N3/8/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

Moscow Ty., 2019

8/8/8/3N1R2/3pk1KQ/4N3/8/8

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Kg3#
      • 2.Kh3#
      • 2.Kg5#
      • 2.Kh5#
  • Tries
    • 1.Sd1?
      • threat
        • 2.Sf2#
      • 1...d3
        • 2.Kg5#
      • 1...Kd3!
    • 1.Sf1?
      • 1...d3
        • 2.Kg5#
      • 1...Kd3!
    • 1.Sc2?
      • 1...d3
        • 2.Kg5#
        • 2.Sc3#
        • 2.Sf6#
        • 2.Qe1#
        • 2.Qe7#
        • 2.Qh1#
      • 1...Kd3!
    • 1.Sg2?
      • 1...d3
        • 2.Kg5#
      • 1...Kd3!
    • 1.Sc4?
      • 1...d3
        • 2.Kg5#
      • 1...Kd3!
    • 1.Sb4?
      • threat
        • 2.Qe7#
      • 1...Kxe3
        • 2.Qe1#
      • 1...dxe3
        • 2.Kg5#
      • 1...d3!
    • 1.Rf4+?
      • 1...Ke5
        • 2.Qf6#
        • 2.Qe7#
      • 1...Kd3!
    • 1.Re5+?
      • 1...Kxe5
        • 2.Qe7#
      • 1...Kd3!
    • 1.Qe1?
      • 1...dxe3
        • 2.Qxe3#
      • 1...d3
        • 2.Sc2#
        • 2.Qb4#
      • 1...Kd3!
    • 1.Qg3?
      • 1...dxe3
        • 2.Qxe3#
      • 1...d3
        • 2.Qf4#
        • 2.Qe5#
      • 1...Kd3!
    • 1.Qg5?
      • 1...dxe3
        • 2.Qxe3#
      • 1...d3
        • 2.Rf4#
        • 2.Qf4#
      • 1...Kd3!
    • 1.Qh2?
      • 1...Kd3
        • 2.Qc2#
      • 1...d3
        • 2.Qf4#
        • 2.Qe5#
      • 1...dxe3!
    • 1.Qh6?
      • 1...dxe3
        • 2.Qxe3#
      • 1...d3
        • 2.Qf4#
      • 1...Kd3!
  • Keys
    • 1.Qf2!
      • 1...Kd3
        • 2.Qc2#
      • 1...dxe3
        • 2.Qxe3#
      • 1...d3
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • P(a);SBLOCK::QAR(C)+K(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(a);SBLOCK::QAR(C)+K(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(a);SBLOCK::QAR(C)+K(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(A);
      • Vars
        • P(a);SBLOCK::QAR(C)+K(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);
      • Threat
        • QAR(C)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(A)::QAR2(C)
        • P(a);SBLOCK,XS(A)::QAR(C)+K(B)
      • Refutation
        • P(a);
    • Try
      • R(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(b);P-FLIGHT,XR(E)::QAR2(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);OGATE,P_SPINP(a),XS(A)::QAR1(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);OGATE,XS(A)::QAR1(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);OGATE,XS(A)::QAR1(C),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • P(a);XS(A)
    • Try
      • Q(C);
      • Vars
        • P(a);OGATE,XS(A)::QAR1(C),XP(a)
        • P(a);SBLOCK::QAR1(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);S_FLIGHT::QAB1(C)
      • P(a);OGATE,XS(A)::QAR1(C),XP(a)
      • P(a);SBLOCK::QAR1(C)
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