MESON Chess Problem Database

Problem Display
PID: 25676 (5Rn1/1p2r3/1P2kPp1/PQ4P1/r2P1B2/p2NKN2/3P1Pq1/1b2R3 w - - 0 1)

Stocchi, Ottavio

Comm., Grantham Journal, 1930

5Rn1/1p2r3/1P2kPp1/PQ4P1/r2P1B2/p2NKN2/3P1Pq1/1b2R3

#2

14 + 9

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3+
      • 2.Kxf3#
    • 1...Qxf2+
      • 2.Kxf2#
    • 1...Qxg5
      • 2.Sxg5#
    • 1...Rxd4
      • 2.Kxd4#
      • 2.Sxd4#
    • 1...Rd7
      • 2.Qe5#
    • 1...Bxd3
      • 2.Kxd3#
    • 1...Sxf6
      • 2.Rxf6#
  • Keys
    • 1.Ke4!
      • threat
        • 2.Qd5#
      • 1...Qxf3+
        • 2.Kxf3#
      • 1...Rxd4+
        • 2.Kxd4#
      • 1...Bxd3+
        • 2.Kxd3#
      • 1...Sxf6+
        • 2.Rxf6#
      • 1...Qxg5
        • 2.Sxg5#
      • 1...Rxa5
        • 2.d5#
      • 1...Rd7
        • 2.Qe5#
      • 1...Ba2
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(b);CHECK,XS(F)::R(A)+K(E),XQ(b)
    • Q(b);CHECK,XP(C)::R(A)+K(E),XQ(b)
    • Q(b);P_PINB(H),XP(K)::S(F),XQ(b)
    • R(h);SBLOCK::QAR1(J)
    • B(a);XS(D)::R(A)+K(E),XB(a)
    • S(i);OGATE,XP(M)::R1(N),XS(i)
  • Actual
    • K(E);P-FLIGHT,P_SPINP(G),P_SPINS(D)
    • Threat
      • QAB1(J)
    • Vars
      • Q(b);CHECK,XS(F)::R(A)+K(E),XQ(b)
      • R(d);CHECK,XP(G)::R(A)+K(E),XR(d)
      • B(a);CHECK,P_PINS(F),XS(D)::R(A)+K(E),XB(a)
      • S(i);CHECK,OGATE,XP(M)::R1(N),XS(i)
      • Q(b);XP(K)::S(F),XQ(b)
      • R(d);N_PINP(G),XP(I)::P(G)
      • R(h);SBLOCK::QAR1(J)
      • B(a);N_PINS(D),P_PINS(F)::S(D)
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