MESON Chess Problem Database

Problem Display
PID: 6536 (4R1K1/6p1/1p1RBp2/b1p5/b2Pkp2/rr3N2/qp2p3/3N3Q w - - 0 1)

Adabashev, Mark Ivanovich

2nd Prize, Krasniy sport, 1931

4R1K1/6p1/1p1RBp2/b1p5/b2Pkp2/rr3N2/qp2p3/3N3Q

#2

8 + 13

6138 Tvorsti Shakhmatnoi Krasoti 1998
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Sd2#
      • 2.Sg5#
    • 1...Re3
      • 2.Sf2#
    • 1...cxd4
      • 2.Rxd4#
  • Tries
    • 1.Se1+?
      • 1...f3
        • 2.Qh4#
      • 1...Rf3!
    • 1.Se5+?
      • 1...f3
        • 2.Qh4#
      • 1...Rf3!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Bf5#
      • 1...Kd3
        • 2.Qf5#
      • 1...Rxf3
        • 2.Qf5#
      • 1...Rc3
        • 2.Sd2#
      • 1...Rd3
        • 2.Bd5#
      • 1...Re3
        • 2.Sf2#
      • 1...Rb4
        • 2.Sd2#
      • 1...Rb5
        • 2.Bc4#
      • 1...f5
        • 2.Sg5#
        • 2.Bxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(e);P_PINB(F),SBLOCK::S(A)
    • P(j);OGATE,XP(D)::R1(E),XP(j)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • P(h);OGATEB,P_SPINP(h)::QAR(B)
      • Refutation
        • R(e);P_PINB(F),P_SPINR(e)
    • Try
      • S(C);CHECK
      • Vars
        • P(h);OGATEB,P_SPINP(h)::QAR(B)
      • Refutation
        • R(e);P_PINB(F),P_SPINR(e)
  • Actual
    • Q(B);
    • Threat
      • R(G)+B(F),DCHECK
    • Vars
      • K(g);S_FLIGHT::QAB(B)
      • R(e);P_PINB(F),SBLOCK,XS(C)::QAB1(B)
      • R(e);P_PINB(F),S_CUTB(i)::S(C)
      • R(e);P_PINB(F),SBLOCK::R(G)+B(F),DCHECK
      • R(e);P_PINB(F),SBLOCK::S(A)
      • R(e);P_PINB(F),S_CUTB(f)::R(G)+B(F)
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