MESON Chess Problem Database

Problem Display
PID: 269226 (8/8/2p1R3/4N3/3kp3/8/2Q5/2K5 w - - 0 1)

Petrasinovic, Petrasin

Vratnica-64, 2020

8/8/2p1R3/4N3/3kp3/8/2Q5/2K5

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qd2#
    • 1...Kd5
      • 2.Qc4#
    • 1...e3
      • 2.Qc4#
    • 1...c5
      • 2.Qd2#
  • Tries
    • 1.Kb1?
      • 1...Kd5
        • 2.Qc4#
      • 1...e3
        • 2.Qc4#
      • 1...c5
        • 2.Qd2#
      • 1...Ke3!
    • 1.Kb2?
      • 1...Kd5
        • 2.Qc4#
      • 1...e3
        • 2.Qc4#
      • 1...c5
        • 2.Qd2#
      • 1...Ke3!
    • 1.Kd2?
      • threat
        • 2.Qc4#
      • 1...Kd5
        • 2.Qc4#
      • 1...e3+!
    • 1.Rd6+?
      • 1...Ke3
        • 2.Qd2#
      • 1...Kxe5!
    • 1.Re7?
      • 1...Ke3
        • 2.Qd2#
      • 1...c5
        • 2.Qd2#
      • 1...e3
        • 2.Qc4#
      • 1...Kd5!
    • 1.Re8?
      • 1...Ke3
        • 2.Qd2#
      • 1...c5
        • 2.Qd2#
      • 1...e3
        • 2.Qc4#
      • 1...Kd5!
    • 1.Qb3?
      • 1...e3
        • 2.Qc4#
      • 1...c5
        • 2.Sc6#
      • 1...Kc5!
    • 1.Qa2?
      • 1...Kc3
        • 2.Qc4#
        • 2.Qb2#
      • 1...Ke3
        • 2.Qd2#
      • 1...c5
        • 2.Qd2#
      • 1...e3
        • 2.Qc4#
      • 1...Kc5!
    • 1.Qe2?
      • 1...Kc3
        • 2.Qc4#
        • 2.Qb2#
      • 1...Kd5
        • 2.Qc4#
      • 1...e3
        • 2.Qc4#
      • 1...c5
        • 2.Qd2#
      • 1...Kc5!
    • 1.Qc3+?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kxc3!
    • 1.Qxc6?
      • 1...e3
        • 2.Qc4#
      • 1...Ke3!
  • Keys
    • 1.Kd1!
      • 1...Ke3
        • 2.Qd2#
      • 1...Kd5
        • 2.Qc4#
      • 1...e3
        • 2.Qc4#
      • 1...c5
        • 2.Qd2#

FEATURES

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