MESON Chess Problem Database

Problem Display
PID: 28219 (8/3Pp3/pbNN4/p1kPQp2/5P2/3pK3/q3bB2/1R6 w - - 0 1)

Stocchi, Ottavio

3rd HM., Xadrez Brasileiro (Arguelles TT), 1934

8/3Pp3/pbNN4/p1kPQp2/5P2/3pK3/q3bB2/1R6

#2

9 + 9

3100 Selected Stocchi (I) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb1
      • 2.Kd2#
    • 1...Qb3
      • 2.Kd2#
    • 1...Qc4
      • 2.Sb7#
    • 1...Qxd5
      • 2.Rc1#
    • 1...Qd2+
      • 2.Kxd2#
    • 1...Qa3
      • 2.Kd2#
    • 1...d2
      • 2.Kxe2#
    • 1...exd6
      • 2.Qd4#
  • Tries
    • 1.Rc1+?
      • 1...Qc4
        • 2.Kd2#
        • 2.Rxc4#
      • 1...Qc2!
    • 1.Rb4?
      • threat
        • 2.Sb7#
      • 1...Qd2+
        • 2.Kxd2#
      • 1...Qxd5
        • 2.Rc4#
      • 1...exd6
        • 2.Qd4#
      • 1...axb4!
    • 1.d8S?
      • threat
        • 2.Se6#
        • 2.S8b7#
      • 1...Qd2+
        • 2.Kxd2#
      • 1...Qxd5
        • 2.Kd2#
        • 2.Rc1#
      • 1...exd6
        • 2.Qd4#
      • 1...e6
        • 2.Sxe6#
        • 2.S8b7#
      • 1...Bxd8!
  • Keys
    • 1.Sb8!
      • threat
        • 2.Sxa6#
      • 1...Qd2+
        • 2.Kxd2#
      • 1...Qxd5
        • 2.Kd2#
      • 1...exd6
        • 2.Qd4#
      • 1...Qc4
        • 2.Sb7#
      • 1...d2
        • 2.Kxe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • Q(a);XR(A)::B(B)+K(C)
    • Q(a);::B(B)+K(C)
    • Q(a);SBLOCK::S(H)
    • Q(a);N_GUARD,P_SPINQ(a),XP(E)::R(A)
    • Q(a);CHECK::B(B)+K(C),XQ(a)
    • P(c);::B(B)+K(C),XB(b)
    • P(i);SBLOCK,XS(H)::QAB1(F)
  • Tries
    • Try
      • R(A);CHECK
      • Refutation
        • Q(a);P_SPINQ(a)
    • Try
      • R(A);
      • Threat
        • S(H)
      • Vars
        • Q(a);CHECK::B(B)+K(C),XQ(a)
        • Q(a);N_GUARD,P_SPINQ(a),XP(E)::R1(A)
        • P(i);SBLOCK,XS(H)::QAB1(F)
      • Refutation
        • P(d);XR(A)
    • Try
      • P(I);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);CHECK::B(B)+K(C),XQ(a)
        • P(i);SBLOCK,XS(H)::QAB1(F)
      • Refutation
        • B(h);XS(I)
  • Actual
    • S(G);
    • Threat
      • S(G),XP(g)
    • Vars
      • Q(a);CHECK::B(B)+K(C),XQ(a)
      • Q(a);P_SPINQ(a),XP(E)::B(B)+K(C)
      • P(i);SBLOCK,XS(H)::QAB1(F)
      • Q(a);SBLOCK::S(H)
      • P(c);::B(B)+K(C),XB(b)
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