MESON Chess Problem Database

Problem Display
PID: 7046 (7Q/3B4/1B3R2/3pk3/1Nr1P2r/2n5/5nq1/K2R4 w - - 0 1)

Adabashev, Mark Ivanovich

Western Morning News, 1935

7Q/3B4/1B3R2/3pk3/1Nr1P2r/2n5/5nq1/K2R4

#2

8 + 7

5064 100 Years of the American Two-move Chess Problem 1962
6490 yacpdb 2009
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe4
      • 2.Qe8#
    • 1...Rcxe4
      • 2.Sc6#
      • 2.Bc7#
    • 1...Rf4
      • 2.Re6#
    • 1...Sfxe4
      • 2.Sd3#
    • 1...Scxe4
      • 2.Rxd5#
    • 1...dxe4
      • 2.Rf5#
  • Tries
    • 1.Sd3+?
      • 1...Kxe4
        • 2.Qe8#
      • 1...Sxd3!
    • 1.Sc6+?
      • 1...Kxe4
        • 2.Qe8#
      • 1...Rxc6!
    • 1.Bd4+?
      • 1...Kxe4
        • 2.Qe8#
      • 1...Rxd4!
    • 1.Bc7+?
      • 1...Kxe4
        • 2.Qe8#
      • 1...Rxc7!
    • 1.Rxd5+?
      • 1...Kxe4
        • 2.Qe8#
      • 1...Sxd5!
    • 1.Rf5+?
      • 1...Kxe4
        • 2.Qe5#
        • 2.Qe8#
      • 1...Kd6!
  • Keys
    • 1.Be3!
      • threat
        • 2.Re6#
      • 1...Kxe4
        • 2.Qe8#
      • 1...Qxe4
        • 2.Rh6#
      • 1...Rcxe4
        • 2.Sc6#
      • 1...Rhxe4
        • 2.Rg6#
      • 1...Sfxe4
        • 2.Sd3#
      • 1...Scxe4
        • 2.Rxd5#
      • 1...dxe4
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(g);P-FLIGHT,XP(D)::QAR(H)
    • R(e);SBLOCK::QAB(H)+R(F),DCHECK
    • S(a);N_GUARD,SBLOCK,XP(D)::S(C)
    • S(c);N_GUARD,SBLOCK,XP(D)::R1(B),XP(f)
    • P(f);SBLOCK,XP(D)::QAB(H)+R(F),DCHECK
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(D)::QAR(H)
      • Refutation
        • S(a);XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(D)::QAR(H)
      • Refutation
        • R(d);XS(C)
    • Try
      • B(E);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(D)::QAR(H)
      • Refutation
        • R(d);XB(E)
    • Try
      • B(E);CHECK
      • Vars
        • K(g);P-FLIGHT,XP(D)::QAR(H)
      • Refutation
        • R(d);XB(E)
    • Try
      • R(B);CHECK,XP(f)
      • Vars
        • K(g);P-FLIGHT,XP(D)::QAR(H)
      • Refutation
        • S(c);XR(B)
    • Try
      • R(F);CHECK
      • Refutation
        • K(g);P_SPINP(f),S_FLIGHT
  • Actual
    • B(E);
    • Threat
      • QAB(H)+R(F),DCHECK
    • Vars
      • K(g);P-FLIGHT,XP(D)::QAR(H)
      • Q(b);N_GUARD,SBLOCK,XP(D)::QAB(H)+R(F)
      • R(d);N_GUARD,SBLOCK,XP(D)::S(C)
      • R(e);N_GUARD,SBLOCK,XP(D)::QAB(H)+R(F)
      • S(a);N_GUARD,SBLOCK,XP(D)::S(C)
      • S(c);N_GUARD,SBLOCK,XP(D)::R1(B),XP(f)
      • P(f);SBLOCK,XP(D)::QAB(H)+R(F),DCHECK
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