MESON Chess Problem Database

Problem Display
PID: 23753 (8/8/2K5/4p3/1Rpk4/4p1Q1/4P3/8 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1996

8/8/2K5/4p3/1Rpk4/4p1Q1/4P3/8

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qg4#
    • 1...e4
      • 2.Qg7#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qxe5#
        • 2.Qg4#
      • 1...e4
        • 2.Qe5#
        • 2.Qg7#
      • 1...Kc3!
    • 1.Rb1?
      • 1...Ke4
        • 2.Qg4#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qg7#
      • 1...Kc3!
    • 1.Rb3?
      • threat
        • 2.Qxe3#
      • 1...Ke4
        • 2.Qg4#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qd6#
        • 2.Qg7#
      • 1...cxb3!
    • 1.Ra4?
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qg7#
      • 1...Kc3!
    • 1.Rb5?
      • threat
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qxe5#
        • 2.Qg4#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qe5#
        • 2.Qg7#
      • 1...Kc3!
    • 1.Rb6?
      • 1...Ke4
        • 2.Qg4#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qg7#
      • 1...Kc3!
    • 1.Rb7?
      • 1...Ke4
        • 2.Qg4#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qg7#
      • 1...Kc3!
    • 1.Rb8?
      • 1...Ke4
        • 2.Qg4#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qg7#
      • 1...Kc3!
    • 1.Qe1?
      • 1...e4
        • 2.Qa1#
      • 1...Ke4!
    • 1.Qh4+?
      • 1...e4
        • 2.Qf6#
        • 2.Qh8#
      • 1...Kc3!
    • 1.Qg1?
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qa1#
        • 2.Qg7#
      • 1...Kc3!
    • 1.Qg2?
      • 1...e4
        • 2.Qg7#
      • 1...Kc3!
    • 1.Qf3?
      • 1...e4
        • 2.Qf6#
      • 1...Kc3!
    • 1.Qh3?
      • 1...Ke4
        • 2.Rxc4#
        • 2.Qg4#
      • 1...e4
        • 2.Qh8#
      • 1...Kc3!
    • 1.Qg4+?
      • 1...e4
        • 2.Qg7#
      • 1...Kc3!
    • 1.Qg5?
      • 1...Ke4
        • 2.Rxc4#
        • 2.Qg4#
      • 1...e4
        • 2.Qf6#
        • 2.Qg7#
      • 1...Kc3!
    • 1.Qg6?
      • threat
        • 2.Qd3#
      • 1...e4
        • 2.Qf6#
        • 2.Qg7#
      • 1...Kc3!
    • 1.Qg7?
      • 1...Ke4
        • 2.Qg4#
      • 1...Kc3!
    • 1.Qg8?
      • threat
        • 2.Rxc4#
        • 2.Qxc4#
      • 1...Ke4
        • 2.Qg4#
      • 1...e4
        • 2.Qg7#
        • 2.Qh8#
      • 1...Kc3!
  • Keys
    • 1.Rb2!
      • 1...Kc3
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qg4#
      • 1...c3
        • 2.Rb4#
      • 1...e4
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR2(B)
    • P(d);OGATEB,SBLOCK::QAB(B)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB1(B),XP(d)
      • Refutation
        • K(c);N_SPINP(b),P_SPINP(a),S_FLIGHT
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
        • P(b);OGATEB,SBLOCK::R(C)
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • R(C);N_PINP(b)
      • Threat
        • QAB1(B),XP(a)
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
        • P(b);OGATEB,SBLOCK::R(C)
      • Refutation
        • P(b);XR(C)
    • Try
      • R(C);
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);N_SPINP(b),P_SPINP(a),S_FLIGHT
    • Try
      • R(C);N_PINP(b)
      • Threat
        • QAB1(B),XP(d)
      • Vars
        • P(b);OGATEB,SBLOCK::R(C)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
        • P(b);OGATEB,SBLOCK::R(C)
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
        • P(b);OGATEB,SBLOCK::R(C)
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
        • P(b);OGATEB,SBLOCK::R(C)
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(d);SBLOCK::QAB(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);N_PINP(b),P_PINP(a)
      • Vars
        • K(c);N_SPINP(a),P-FLIGHT,P_SPINP(b)::QAR2(B)
      • Refutation
        • K(c);N_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);N_SPINP(b),P_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);N_SPINP(b),P_SPINP(a),S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • P(d);OGATEB,SBLOCK::QAB(B)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • K(c);N_SPINP(b),P_SPINP(d),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR2(B)
      • Refutation
        • K(c);N_SPINP(b),S_FLIGHT
  • Actual
    • R(C);N_PINP(b)
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::QAB(B),XP(d)
      • K(c);P-FLIGHT::QAR2(B)
      • P(b);OGATEB,SBLOCK::R(C)
      • P(d);OGATEB,SBLOCK::QAB(B)
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