MESON Chess Problem Database

Problem Display
PID: 114153 (Nb6/1Rp1p3/Q1n1Pp2/p2k4/q2pRK2/BN6/8/8 w - - 0 1)

Stocchi, Ottavio

Grantham Journal, 1934

Nb6/1Rp1p3/Q1n1Pp2/p2k4/q2pRK2/BN6/8/8

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Qxb5#
    • 1...Ba7
      • 2.Sxc7#
    • 1...Sb4
      • 2.Rxd4#
  • Tries
    • 1.Rb5+?
      • 1...Qxb5
        • 2.Qxb5#
      • 1...Kc4!
  • Keys
    • 1.Rxc7!
      • threat
        • 2.Sb6#
      • 1...Bxc7+
        • 2.Sxc7#
      • 1...Qxb3
        • 2.Qxc6#
      • 1...Qxa3
        • 2.Qxc6#
      • 1...Qb5
        • 2.Qxb5#
      • 1...Qb4
        • 2.Qxc6#
      • 1...Ba7
        • 2.Rd7#
      • 1...Sb4
        • 2.Rxd4#
      • 1...Se5
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD::QAR2(E),XQ(a)
    • B(i);N_GUARD::S(H),XP(g)
    • S(e);N_GUARD,S_CUTQ(a)::R1(C),XP(b)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • Q(a);OGATE,XR(G)::QAR2(E),XQ(a)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
  • Actual
    • R(G);P_SPINR(G),XP(g)
    • Threat
      • S(H)
    • Vars
      • B(i);CHECK,XR(G)::S(H),XB(i)
      • Q(a);N_GUARD,XS(B)::QAB1(E),XS(e)
      • Q(a);N_GUARD,XB(A)::QAB1(E),XS(e)
      • Q(a);N_GUARD::QAR2(E),XQ(a)
      • Q(a);N_GUARD::QAB1(E),XS(e)
      • B(i);N_PINR(G)::R(G)
      • S(e);N_GUARD,S_CUTQ(a)::R1(C),XP(b)
      • S(e);N_PINR(G)::R1(G)
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