MESON Chess Problem Database

Problem Display
PID: 110724 (8/2N5/2p5/B7/2kp4/1Np2p2/2Q2Pp1/6K1 w - - 0 1)

Aitov, Fatikh Sadikovich

Shakhmaty, 1957

8/2N5/2p5/B7/2kp4/1Np2p2/2Q2Pp1/6K1

#2

6 + 6

6490 yacpdb 2009
5454 Near Snap 2015
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Qxc3#
    • 1...c5
      • 2.Sd2#
  • Tries
    • 1.Sc1?
      • 1...d3
        • 2.Qxc3#
      • 1...c5
        • 2.Qb3#
        • 2.Qd3#
        • 2.Qa4#
        • 2.Qa2#
      • 1...Kc5!
    • 1.Sc5?
      • 1...d3
        • 2.Qxc3#
      • 1...Kxc5!
  • Keys
    • 1.Qa2!
      • 1...Kd3
        • 2.Sc5#
      • 1...c5
        • 2.Sc1#
      • 1...c2
        • 2.Qxc2#
      • 1...d3
        • 2.Qa4#

Anticipated by 138894(1902)

This anticipates 97192(1963-1964), 244503(2008)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(e);N_GUARD::QAR1(B),XP(b)
    • P(f);SBLOCK::S(D)
  • Tries
    • Try
      • S(D);
      • Vars
        • P(e);N_GUARD::QAR1(B),XP(b)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • S(D);
      • Vars
        • P(e);N_GUARD::QAR1(B),XP(b)
      • Refutation
        • K(d);P-FLIGHT,XS(D)
  • Actual
    • Q(B);N_PINP(b)
    • Vars
      • K(d);S_FLIGHT::S(D)
      • P(f);SBLOCK::QAB(B)+S(D)
      • P(b);OGATEB::QAR2(B),XP(b)
      • P(e);SBLOCK::QAR2(B)
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