MESON Chess Problem Database

Problem Display
PID: 12215 (8/4K3/2p5/2pk4/3p1Q2/3R4/8/8 w - - 0 1)

di Vincenzi, Renato

Unpublished, 1976

8/4K3/2p5/2pk4/3p1Q2/3R4/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...c4
      • 2.Qxd4#
      • 2.Qf5#
  • Tries
    • 1.Kf6?
      • 1...c4
        • 2.Qe5#
        • 2.Qxd4#
      • 1...Kc4!
    • 1.Kd7?
      • 1...c4
        • 2.Qxd4#
        • 2.Qf5#
      • 1...Kc4!
    • 1.Kf7?
      • 1...c4
        • 2.Qxd4#
      • 1...Kc4!
    • 1.Rd1?
      • 1...d3
        • 2.Rxd3#
      • 1...c4
        • 2.Qxd4#
        • 2.Qf5#
      • 1...Kc4!
    • 1.Rd2?
      • 1...d3
        • 2.Rxd3#
      • 1...c4
        • 2.Qxd4#
        • 2.Qf5#
      • 1...Kc4!
    • 1.Ra3?
      • 1...d3
        • 2.Rxd3#
      • 1...c4
        • 2.Qf5#
      • 1...Kc4!
    • 1.Rc3?
      • threat
        • 2.Qf5#
      • 1...d3
        • 2.Rxd3#
      • 1...dxc3!
    • 1.Rf3?
      • 1...d3
        • 2.Rxd3#
      • 1...c4
        • 2.Qf5#
      • 1...Kc4!
    • 1.Rg3?
      • 1...d3
        • 2.Rxd3#
        • 2.Rg5#
      • 1...c4
        • 2.Rg5#
        • 2.Qf5#
      • 1...Kc4!
    • 1.Rh3?
      • 1...d3
        • 2.Rxd3#
        • 2.Rh5#
      • 1...c4
        • 2.Rh5#
        • 2.Qf5#
      • 1...Kc4!
    • 1.Qe3?
      • threat
        • 2.Qe6#
      • 1...c4
        • 2.Qxd4#
      • 1...Kc4!
  • Keys
    • 1.Rb3!
      • 1...Kc4
        • 2.Qf7#
      • 1...d3
        • 2.Rxd3#
      • 1...c4
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(b);N_GUARD::QAR1(B),XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);OGATEB::R(A),XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(a);OGATEB::R(A),XP(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::R(A),XP(a)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • R(A);N_PINP(a)
      • Threat
        • QAR2(B)
      • Vars
        • P(a);OGATEB::R(A),XP(a)
      • Refutation
        • P(a);XR(A)
    • Try
      • R(A);N_PINP(a)
      • Vars
        • P(a);OGATEB::R(A),XP(a)
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • R(A);N_PINP(a)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • R(A);N_PINP(a)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(b);N_GUARD::QAR1(B),XP(a)
      • Refutation
        • K(c);N_SPINP(a),S_FLIGHT
  • Actual
    • R(A);N_PINP(a)
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT::QAB(B)
      • P(a);OGATEB::R(A),XP(a)
      • P(b);SBLOCK::QAR2(B)
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