MESON Chess Problem Database

Problem Display
PID: 231788 (8/8/1Q6/8/P7/2kp4/K3P3/7R w - - 0 1)

Turevski, Dmitri Evgenevich

ChessStar, 2010

8/8/1Q6/8/P7/2kp4/K3P3/7R

#2

5 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Qb2#
    • 1...d2
      • 2.Qc5#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Qc5#
      • 1...Kc2
        • 2.Qb3#
      • 1...Kc4!
    • 1.Qd4+?
      • 1...Kc2
        • 2.Qb2#
        • 2.Qxd3#
      • 1...Kd2
        • 2.Qxd3#
      • 1...Kxd4!
    • 1.Qb3+?
      • 1...Kd2
        • 2.Qxd3#
      • 1...Kd4!
    • 1.Qb4+?
      • 1...Kc2
        • 2.Qb2#
      • 1...Kxb4!
    • 1.e3?
      • 1...Kc2
        • 2.Qb2#
      • 1...Kc4
        • 2.Qd4#
      • 1...d2
        • 2.Qb3#
      • 1...Kd2!
  • Keys
    • 1.Qd6!
      • 1...Kc2
        • 2.Qxd3#
      • 1...Kd2
        • 2.Qxd3#
      • 1...Kc4
        • 2.Rc1#
      • 1...dxe2
        • 2.Rc1#
      • 1...d2
        • 2.Qc5#

There are these versions: 231789

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::QAR1(E)
    • P(b);SBLOCK::QAR2(E)
  • Tries
    • Try
      • R(A);
      • Threat
        • QAR2(E)
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P_SPINP(b),S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(E),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT,XQ(E)
    • Try
      • P(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • P(b);SBLOCK::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);P-FLIGHT::QAB1(E),XP(b)
      • K(a);P_SPINP(b),S_FLIGHT::QAR1(E),XP(b)
      • K(a);P-FLIGHT::R(A)
      • P(b);XP(C)::R(A)
      • P(b);SBLOCK::QAR2(E)
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