MESON Chess Problem Database

Problem Display
PID: 75478 (8/5R2/8/5Q2/6p1/3P2K1/3pk1N1/5N2 w - - 0 1)

Croitor, Mikhail Vasilevich

Mat Plus, 2007

8/5R2/8/5Q2/6p1/3P2K1/3pk1N1/5N2

#2

6 + 3

5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...d1Q
      • 2.Re7#
      • 2.Qe4#
    • 1...d1B
      • 2.Re7#
      • 2.Qe4#
    • 1...d1R
      • 2.Re7#
      • 2.Qe4#
  • Tries
    • 1.Qf2+?
      • 1...Kd1
        • 2.Qxd2#
      • 1...Kxd3!
    • 1.Qf4?
      • threat
        • 2.Qxd2#
      • 1...Kd1
        • 2.Qxd2#
      • 1...d1Q
        • 2.Qe3#
        • 2.Qe4#
      • 1...d1S
        • 2.Qd2#
      • 1...d1B
        • 2.Qd2#
        • 2.Qe3#
        • 2.Qe4#
      • 1...d1R
        • 2.Qe3#
        • 2.Qe4#
      • 1...Kxd3!
    • 1.Qb5?
      • 1...d1Q
        • 2.Rf2#
      • 1...d1S
        • 2.d4#
      • 1...d1B
        • 2.Rf2#
        • 2.d4#
      • 1...d1R
        • 2.Rf2#
      • 1...Kd1!
    • 1.Qg5?
      • threat
        • 2.Qxd2#
      • 1...Kd1
        • 2.Qxd2#
      • 1...d1Q
        • 2.Qe3#
      • 1...d1S
        • 2.Qd2#
      • 1...d1B
        • 2.Qd2#
        • 2.Qe3#
      • 1...d1R
        • 2.Qe3#
      • 1...Kxd3!
    • 1.d4?
      • 1...d1Q
        • 2.Re7#
        • 2.Qe4#
      • 1...d1S
        • 2.Qc2#
        • 2.Qb5#
      • 1...d1B
        • 2.Re7#
        • 2.Qe4#
        • 2.Qb5#
      • 1...d1R
        • 2.Re7#
        • 2.Qe4#
      • 1...Kd1!
  • Keys
    • 1.Rc7!
      • 1...Kd1
        • 2.Qxg4#
      • 1...d1Q
        • 2.Re7#
      • 1...d1S
        • 2.Rc2#
      • 1...d1B
        • 2.Re7#
      • 1...d1R
        • 2.Re7#

Anticipated by 81732(1980)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E),XP(a)
      • Refutation
        • K(b);S_FLIGHT,XP(C)
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(a)
      • Vars
        • K(b);S_FLIGHT::QAR1(E),XP(a)
        • P(a);::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XP(C)
    • Try
      • Q(E);
      • Vars
        • P(a);SBLOCK::R1(F)
        • P(a);SBLOCK::QAB(E)+P(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR1(E),XP(a)
      • Vars
        • K(b);S_FLIGHT::QAR1(E),XP(a)
        • P(a);SBLOCK::QAR1(E)
        • P(a);::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT,XP(C)
    • Try
      • P(C);
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(F);
    • Vars
      • K(b);S_FLIGHT::QAB(E),XP(c)
      • P(a);SBLOCK::R(F)
      • P(a);OGATEB,SBLOCK::R(F)
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