MESON Chess Problem Database

Problem Display
PID: 6205 (b1B3r1/K4Qqp/R2N4/2pp2kp/R7/5n2/8/4B3 w - - 0 1)

Mari, Alberto

1st Prize, 64 Shakhmatnoe obozrenie, 1928/I

b1B3r1/K4Qqp/R2N4/2pp2kp/R7/5n2/8/4B3

#2

7 + 9

35 L'Italia Scacchistica 1930
3098 FIDE Album (1914-1944) (I) 1971
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qh6
      • 2.Qf5#
    • 1...Qg6
      • 2.Qf4#
    • 1...Qxf7+
      • 2.Sxf7#
    • 1...Rxc8
      • 2.Qxg7#
    • 1...Rd8
      • 2.Qxg7#
    • 1...Re8
      • 2.Qxg7#
    • 1...Rf8
      • 2.Qxg7#
    • 1...Rh8
      • 2.Qxg7#
    • 1...Sg1
      • 2.Bd2#
    • 1...Sd2
      • 2.Bxd2#
    • 1...Sh2
      • 2.Bd2#
    • 1...Sh4
      • 2.Bd2#
    • 1...Se5
      • 2.Bd2#
  • Tries
    • 1.Bh4+?
      • 1...Kh6
        • 2.Sf5#
      • 1...Sxh4!
    • 1.Rg4+?
      • 1...Kh6
        • 2.Sf5#
      • 1...hxg4!
  • Keys
    • 1.Rh4!
      • threat
        • 2.Rxh5#
      • 1...Qxf7+
        • 2.Sxf7#
      • 1...Kh6
        • 2.Rxh5#
      • 1...Rxc8
        • 2.Qxg7#
      • 1...Sxh4
        • 2.Bd2#
      • 1...Qf6
        • 2.Qxh5#
      • 1...Qh6
        • 2.Qf5#
      • 1...Qg6
        • 2.Qf4#

This anticipates 188612(1937)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • Q(f);N_PINQ(F),SBLOCK::QAR1(F)
    • Q(f);N_PINQ(F),SBLOCK::QAB1(F)
    • Q(f);CHECK,XQ(F)::S(D),XQ(f)
    • R(i);N_GUARD,XB(G)::QAR2(F),XQ(f)
    • R(i);N_GUARD::QAR2(F),XQ(f)
    • S(a);N_GUARD::B(A)
    • S(a);N_GUARD::B(A),XS(a)
  • Tries
    • Try
      • B(A);CHECK
      • Vars
        • K(d);S_FLIGHT::R(C)+S(D),DCHECK
      • Refutation
        • S(a);XB(A)
    • Try
      • R(B);CHECK
      • Vars
        • K(d);S_FLIGHT::R(C)+S(D),DCHECK
      • Refutation
        • P(e);XR(B)
  • Actual
    • R(B);
    • Threat
      • R1(B),XP(e)
    • Vars
      • Q(f);CHECK,XQ(F)::S(D),XQ(f)
      • K(d);P_SPINP(e),S_FLIGHT::R1(B),XP(e)
      • R(i);N_GUARD,XB(G)::QAR2(F),XQ(f)
      • S(a);N_GUARD,SBLOCK,XR(B)::B(A)
      • Q(f);N_PINQ(F),SBLOCK::QAR1(F),XP(e)
      • Q(f);N_PINQ(F),SBLOCK::QAR1(F)
      • Q(f);N_PINQ(F),SBLOCK::QAB1(F)
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Developed and maintained by Brian Stephenson.
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