MESON Chess Problem Database

Problem Display
PID: 103291 (1K4n1/7n/4N3/8/2PPk1P1/4p3/2R3R1/Q7 w - - 0 1)

Marandiuk, Mikhail Nazarovich

Komsomolets Zaporozhya, 1974

1K4n1/7n/4N3/8/2PPk1P1/4p3/2R3R1/Q7

#2

8 + 4

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Sc5#
    • 1...Kf3
      • 2.Qa8#
  • Tries
    • 1.Sc5+?
      • 1...Kf3
        • 2.Qf1#
      • 1...Kf4!
    • 1.Qh1?
      • threat
        • 2.Rgd2#
      • 1...Kd3
        • 2.Qxh7#
      • 1...Kf3
        • 2.Rg1#
      • 1...e2
        • 2.Rg3#
      • 1...Sg5!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Rcf2#
      • 1...Kd3
        • 2.Rc1#
      • 1...Kf3
        • 2.Qb7#
      • 1...e2
        • 2.Rc3#

This anticipates 81578(1984/II)

This is a version of 103151

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(G)
    • K(b);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A)+R(C)
      • Vars
        • K(b);S_FLIGHT::QAB(A),XS(c)
        • K(b);S_FLIGHT::QAB(A)+R(C)
        • P(a);::QAB(A)+R(C)
      • Refutation
        • S(c);
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+R(B)
    • Vars
      • K(b);S_FLIGHT::QAB(A)+R(B)
      • K(b);S_FLIGHT::QAB(A)
      • P(a);::QAB(A)+R(B)
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