MESON Chess Problem Database

Problem Display
PID: 231210 (5rn1/8/2pB4/R2bN3/p2kNp2/r2p1R2/n6p/4Q2K w - - 0 1)

Mari, Alberto

2nd HM., Grantham Journal, 1927

5rn1/8/2pB4/R2bN3/p2kNp2/r2p1R2/n6p/4Q2K

#2

7 + 11

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bb3
      • 2.Rxd3#
    • 1...Bc4
      • 2.Sxc6#
    • 1...Sc3
      • 2.Rxd3#
  • Tries
    • 1.Qb4+?
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sxb4!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Bc5#
      • 1...Bxf3+
        • 2.Sgxf3#
      • 1...Rc3
        • 2.Qf2#
      • 1...Bb3
        • 2.Rxd3#
      • 1...Bc4
        • 2.Sxc6#
      • 1...Be4
        • 2.Se6#
      • 1...Be6
        • 2.Sxe6#
      • 1...Bf7
        • 2.Rxf4#
      • 1...c5
        • 2.Bxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(h);S_CUTR(c)::R1(C),XP(d)
    • B(h);N_GUARD,SBLOCK::S(F),XP(i)
    • S(a);S_CUTR(c)::R1(C),XP(d)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::QAR1(A),XB(h)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • S(D);P_SPINR(C)
    • Threat
      • B(G)
    • Vars
      • B(h);CHECK,XR(C)::S(D),XB(h)
      • R(c);SBLOCK::QAB(A)
      • B(h);N_PINR(C)::R1(C),XP(d)
      • B(h);N_GUARD,N_PINR(C),SBLOCK::S(F),XP(i)
      • B(h);N_GUARD::S(D)
      • B(h);N_GUARD,N_PINR(C)::S(D),XB(h)
      • B(h);N_PINR(C)::R(C),XP(g)
      • P(i);::B(G),XP(i)
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