MESON Chess Problem Database

Problem Display
PID: 28319 (1R2Nb2/R2pk1p1/1p4K1/1Pq3Np/4P2Q/B7/8/1b6 w - - 0 1)

Stocchi, Ottavio

1st HM.=, British Chess Magazine, 1934/II

1R2Nb2/R2pk1p1/1p4K1/1Pq3Np/4P2Q/B7/8/1b6

#2

9 + 8

3100 Selected Stocchi (I) 2001
14475 Mat Plus Review 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Qb4
      • 2.Bxb4#
    • 1...Qd6+
      • 2.Bxd6#
    • 1...Bxe4+
      • 2.Qxe4#
  • Tries
    • 1.Sxg7?
      • threat
        • 2.Sf7#
        • 2.Sf5#
      • 1...Qd6+
        • 2.S5e6#
      • 1...Bxe4+
        • 2.Sxe4#
      • 1...Kd6
        • 2.Sf7#
      • 1...Bxg7!
    • 1.Qh3?
      • threat
        • 2.Rxd7#
        • 2.Qe6#
        • 2.Qxd7#
      • 1...Qd6+
        • 2.Bxd6#
        • 2.Qe6#
      • 1...Ba2
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Bxe4+!
    • 1.Qf4?
      • threat
        • 2.Qe5#
        • 2.Qf7#
      • 1...Qd6+
        • 2.Bxd6#
        • 2.Qxd6#
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Ba2!
    • 1.Qg4?
      • threat
        • 2.Rxd7#
        • 2.Qe6#
        • 2.Qxd7#
      • 1...Qd6+
        • 2.Bxd6#
        • 2.Qe6#
      • 1...Bxe4+
        • 2.Qxe4#
      • 1...Ba2
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...hxg4!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Sf7#
      • 1...Qd6+
        • 2.Sge6#
      • 1...Bxe4+
        • 2.Sxe4#
      • 1...Kd6
        • 2.Sf7#
      • 1...d5
        • 2.Se8#
      • 1...d6
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(b);OGATEB::B(A),XQ(b)
    • Q(b);CHECK,OGATE::B(A),XQ(b)
    • B(a);CHECK,OGATE,XP(B)::QAR(C),XB(a)
  • Tries
    • Try
      • S(I);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK::QAB(C)+S(E)
        • B(a);CHECK,XP(B)::QAB(C)+S(E),XB(a)
        • K(f);N_SPINP(e),S_FLIGHT::S(E)
      • Refutation
        • B(h);XS(I)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Refutation
        • B(a);CHECK,XP(B)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);CHECK,OGATE,XP(B)::QAR(C),XB(a)
      • Refutation
        • B(a);N_PINP(B)
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);CHECK,OGATE,XP(B)::QAR(C),XB(a)
      • Refutation
        • P(c);XQ(C)
  • Actual
    • S(I);N_PINP(e)
    • Threat
      • QAB(C)+S(E)
    • Vars
      • Q(b);CHECK::QAB(C)+S(E)
      • B(a);CHECK,XP(B)::QAB(C)+S(E),XB(a)
      • K(f);S_FLIGHT::S(E)
      • P(e);::R(G)+S(I)
      • P(e);N_SPINQ(b),SBLOCK::R(G)+S(I),DCHECK
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