MESON Chess Problem Database

Problem Display
PID: 609 (2b4Q/4p2K/4pr2/2P1k3/2P2R2/3P3p/2n4B/8 w - - 0 1)

Anonymous

British Chess Magazine, 1882

2b4Q/4p2K/4pr2/2P1k3/2P2R2/3P3p/2n4B/8

#2

7 + 7

3360 Simple Two-move Themes 1924
5454 Near Snap 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qb8#
    • 1...Bb7
      • 2.Qb8#
    • 1...Bd7
      • 2.Qb8#
    • 1...Sa1
      • 2.d4#
    • 1...Se1
      • 2.d4#
    • 1...Sa3
      • 2.d4#
    • 1...Se3
      • 2.d4#
    • 1...Sb4
      • 2.d4#
    • 1...Sd4
      • 2.Rf1#
      • 2.Rf2#
      • 2.Rf3#
      • 2.Rxf6#
  • Tries
    • 1.Bg3?
      • 1...Ba6
        • 2.Qb8#
      • 1...Bb7
        • 2.Qb8#
      • 1...Bd7
        • 2.Qb8#
      • 1...Sa1
        • 2.d4#
      • 1...Se1
        • 2.d4#
      • 1...Sa3
        • 2.d4#
      • 1...Se3
        • 2.d4#
      • 1...Sb4
        • 2.d4#
      • 1...Sd4
        • 2.Rf1#
        • 2.Rf2#
        • 2.Rf3#
        • 2.Rxf6#
      • 1...h2!
  • Keys
    • 1.Kg7!
      • 1...Rg6+
        • 2.Kxg6#
      • 1...Rf7+
        • 2.Kxf7#
      • 1...Rxf4
        • 2.Kg6#
      • 1...Rf5
        • 2.Re4#
      • 1...Rh6
        • 2.Kxh6#
      • 1...Rf8
        • 2.Kxf8#
      • 1...Ba6
        • 2.Qb8#
      • 1...Bb7
        • 2.Qb8#
      • 1...Bd7
        • 2.Qb8#
      • 1...Sa1
        • 2.d4#
      • 1...Se1
        • 2.d4#
      • 1...Sa3
        • 2.d4#
      • 1...Se3
        • 2.d4#
      • 1...Sb4
        • 2.d4#
      • 1...Sd4
        • 2.Rxf6#

This anticipates 121729(1937)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • B(g);OGATE::QAB(G)
    • S(a);N_GUARD::P(B)
  • Tries
    • Try
      • B(A);
      • Vars
        • B(g);OGATE::QAB(G)
        • S(a);N_GUARD::P(B)
      • Refutation
        • P(b);
  • Actual
    • K(F);N_PINR(e),P-FLIGHT
    • Vars
      • R(e);CHECK::QAB(G)+K(F),XR(e)
      • R(e);P_SPINR(e),XR(D)::QAB(G)+K(F)
      • R(e);SBLOCK::B(A)+R(D),DCHECK
      • R(e);::QAB(G)+K(F),XR(e)
      • B(g);OGATE::QAB(G)
      • S(a);N_GUARD::P(B)
      • S(a);SBLOCK::B(A)+R(D),XR(e)
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