MESON Chess Problem Database

Problem Display
PID: 179456 (5Kn1/1B2ppr1/5q1p/3p1N1Q/Rb2k1p1/3R2P1/2P1rp2/5N2 w - - 0 1)

Adabashev, Mark Ivanovich

Shakhmaty v SSSR, 1938

5Kn1/1B2ppr1/5q1p/3p1N1Q/Rb2k1p1/3R2P1/2P1rp2/5N2

#2

9 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Re3#
    • 1...Rd2
      • 2.Re3#
    • 1...Re3
      • 2.Rxe3#
    • 1...e5+
      • 2.Rxb4#
    • 1...e6+
      • 2.Sd6#
  • Tries
    • 1.Sd2+?
      • 1...Rxd2
        • 2.Re3#
      • 1...Ke5!
    • 1.Sd6+?
      • 1...exd6
        • 2.Bxd5#
        • 2.Qxd5#
      • 1...Qxd6!
    • 1.Qh1+?
      • 1...Ke5
        • 2.Qxd5#
      • 1...Kxf5!
  • Keys
    • 1.Rxd5!
      • threat
        • 2.Qh1#
      • 1...e5+
        • 2.Rd6#
      • 1...e6+
        • 2.Rc5#
      • 1...Kf3
        • 2.Rd3#
        • 2.Qh1#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Qc3
        • 2.Rc5#
      • 1...Qh4
        • 2.Rda5#
        • 2.Rb5#
        • 2.Rc5#
      • 1...Qe5
        • 2.Rd4#
      • 1...Re3
        • 2.Sd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD,XP(B)::R1(C)
    • R(a);N_GUARD::R1(C)
    • R(a);N_GUARD::R1(C),XR(a)
    • P(i);CHECK,SBLOCK,S_CUTQ(g)::R(E),XB(c)
    • P(i);CHECK,N_GUARD,S_CUTQ(g)::S(F)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • R(a);XS(A)::R1(C)
      • Refutation
        • K(d);N_SPINB(c),N_SPINP(f),P-FLIGHT
    • Try
      • S(F);CHECK
      • Refutation
        • Q(g);XS(F)
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);N_SPINB(c),N_SPINP(f),OGATE,P-FLIGHT::QAR1(G),XP(f)
      • Refutation
        • K(d);N_SPINB(c),N_SPINP(f),S_FLIGHT,XS(F)
  • Actual
    • R(C);XP(f)
    • Threat
      • QAB(G)
    • Vars
      • P(i);CHECK,SBLOCK::B(H)+R(C)
      • P(i);CHECK,S_CUTQ(g)::B(H)+R(C)
      • Q(g);OGATE,XS(F)::QAB1(G),XQ(g)
      • Q(g);N_GUARD::B(H)+R(C)
      • Q(g);SBLOCK::B(H)+R(C),DCHECK
      • R(a);N_GUARD::S(A)
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Developed and maintained by Brian Stephenson.
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