MESON Chess Problem Database

Problem Display
PID: 271345 (3R4/4N3/8/5p2/3pk3/1K6/5Q2/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

Mosiashvili-75 JT (Kudesnik), 2023

3R4/4N3/8/5p2/3pk3/1K6/5Q2/8

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Rxd4#
    • 1...Ke5
      • 2.Qxf5#
    • 1...f4
      • 2.Qe2#
  • Tries
    • 1.Kb2?
      • 1...Kd3
        • 2.Rxd4#
      • 1...Ke5
        • 2.Qxf5#
      • 1...f4
        • 2.Qe2#
      • 1...d3!
    • 1.Kc2?
      • 1...Ke5
        • 2.Qxf5#
      • 1...f4
        • 2.Qe2#
      • 1...d3+!
    • 1.Kb4?
      • 1...Kd3
        • 2.Rxd4#
      • 1...Ke5
        • 2.Qxf5#
      • 1...f4
        • 2.Qe2#
      • 1...d3!
    • 1.Kc4?
      • 1...Ke5
        • 2.Qxf5#
      • 1...f4
        • 2.Qe2#
      • 1...d3!
    • 1.Sd5?
      • threat
        • 2.Qe2#
      • 1...Kd3
        • 2.Qc2#
      • 1...Ke5
        • 2.Qe1#
        • 2.Qe2#
      • 1...d3
        • 2.Qe3#
        • 2.Qf4#
      • 1...f4!
    • 1.Sc6?
      • threat
        • 2.Rxd4#
      • 1...Kd3
        • 2.Rxd4#
      • 1...d3
        • 2.Rd4#
      • 1...f4!
    • 1.Sg6?
      • threat
        • 2.Rxd4#
        • 2.Qe2#
      • 1...Kd3
        • 2.Rxd4#
      • 1...d3
        • 2.Rd4#
        • 2.Qf4#
      • 1...f4!
    • 1.Rd5?
      • 1...Kd3
        • 2.Rxd4#
      • 1...f4
        • 2.Qe2#
      • 1...d3!
    • 1.Rd7?
      • 1...Kd3
        • 2.Rxd4#
      • 1...Ke5
        • 2.Qxf5#
      • 1...f4
        • 2.Qe2#
      • 1...d3!
    • 1.Qf3+?
      • 1...Ke5
        • 2.Qxf5#
      • 1...Kxf3!
  • Keys
    • 1.Rd6!
      • 1...Kd3
        • 2.Rxd4#
      • 1...Ke5
        • 2.Qxd4#
      • 1...d3
        • 2.Re6#
      • 1...f4
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_GUARD,P_SPINP(a),S_FLIGHT::R1(D),XP(a)
    • K(b);N_GUARD,P-FLIGHT::QAR1(A),XP(c)
    • P(c);SBLOCK::QAR2(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_GUARD,P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • K(b);N_GUARD,P-FLIGHT::QAR1(A),XP(c)
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(A),XP(c)
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_GUARD,P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • K(b);N_GUARD,P-FLIGHT::QAR1(A),XP(c)
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(A),XP(c)
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Threat
        • QAR2(A)
      • Vars
        • K(b);N_GUARD,S_CUTP(a),S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • S(C);
      • Threat
        • R1(D),XP(a)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • P(a);::R1(D)
      • Refutation
        • P(c);
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT::R1(D),XP(a)
      • Refutation
        • P(c);
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • R(D);
      • Vars
        • K(b);N_GUARD,P_SPINP(a),S_FLIGHT::R1(D),XP(a)
        • K(b);N_GUARD,P-FLIGHT::QAR1(A),XP(c)
        • P(c);SBLOCK::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(A),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • R(D);
    • Vars
      • K(b);N_GUARD,P_SPINP(a),S_FLIGHT::R1(D),XP(a)
      • K(b);N_GUARD,P-FLIGHT::QAB1(A),XP(a)
      • P(a);SBLOCK::R(D)
      • P(c);SBLOCK::QAR2(A)
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