MESON Chess Problem Database

Problem Display
PID: 114158 (8/8/3p4/1K4R1/2pPkr1p/2P2n1Q/2P1N1np/2BR3B w - - 0 1)

Stocchi, Ottavio

Lo Scacchistica di Roma, 1934

8/8/3p4/1K4R1/2pPkr1p/2P2n1Q/2P1N1np/2BR3B

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5+
      • 2.Qxf5#
    • 1...Sge1
      • 2.Qe6#
    • 1...Se3
      • 2.Qe6#
    • 1...Sfe1
      • 2.Qe3#
    • 1...Sg1
      • 2.Qe3#
    • 1...Sxd4+
      • 2.Rxd4#
  • Tries
    • 1.Sxf4?
      • threat
        • 2.Qf5#
      • 1...Sxd4+
        • 2.Rxd4#
      • 1...Sxg5
        • 2.Re1#
      • 1...Se3
        • 2.Qxf3#
      • 1...Sfe1
        • 2.Rxe1#
        • 2.Qe3#
      • 1...Sg1
        • 2.Qe3#
      • 1...Se5
        • 2.Re1#
        • 2.Qe3#
      • 1...Sd2!
    • 1.Bxg2?
      • threat
        • 2.Qe6#
      • 1...Rf5+
        • 2.Qxf5#
      • 1...Rg4
        • 2.Bxf3#
        • 2.Qxg4#
        • 2.Qxf3#
      • 1...Rf6!
  • Keys
    • 1.Re1!
      • threat
        • 2.Sg3#
      • 1...Rf5+
        • 2.Qxf5#
      • 1...Sxd4+
        • 2.Sxd4#
      • 1...Sgxe1
        • 2.Qe6#
      • 1...Sfxe1
        • 2.Qe3#
      • 1...Sxg5
        • 2.Sxf4#
      • 1...Se5
        • 2.Sxf4#
      • 1...Se3
        • 2.Qe6#
      • 1...Sg1
        • 2.Sxg1#
        • 2.Qe3#
      • 1...Sd2
        • 2.Sg1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(f);CHECK,N_GUARD::QAB1(G),XR(f)
    • S(a);P_SPINS(c)::QAR2(G)
    • S(c);OGATE,P_SPINS(a)::QAR1(G)
    • S(c);CHECK,OGATE,P_SPINS(a),XP(H)::R1(B),XS(c)
  • Tries
    • Try
      • S(E);XR(f)
      • Threat
        • QAB1(G)
      • Vars
        • S(c);CHECK,OGATE,P_SPINS(a),XP(H)::R1(B),XS(c)
        • S(c);N_GUARD,P_SPINS(a),XR(J)::R(B)
        • S(a);P_SPINS(c)::QAB1(G),XS(c)
        • S(c);OGATE,P_SPINS(a)::QAR1(G)
      • Refutation
        • S(c);P_SPINS(a)
    • Try
      • B(C);P_PINS(c),XS(a)
      • Threat
        • QAR2(G)
      • Vars
        • R(f);CHECK,N_GUARD::QAB1(G),XR(f)
      • Refutation
        • R(f);
  • Actual
    • R(B);
    • Threat
      • R(B)+S(E),DCHECK
    • Vars
      • R(f);CHECK,N_GUARD::QAB1(G),XR(f)
      • S(c);CHECK,P_SPINS(a),XP(H)::R(B)+S(E),XS(c)
      • S(a);P_SPINS(c),XR(B)::QAR2(G)
      • S(c);OGATE,P_SPINS(a),XR(B)::QAR1(G)
      • S(c);N_GUARD,P_SPINS(a),XR(J)::R(B)+S(E),XR(f)
      • S(c);N_GUARD,P_SPINS(a)::R(B)+S(E),XR(f)
      • S(a);P_SPINS(c)::QAR2(G)
      • S(c);N_GUARD,P_SPINS(a)::R(B)+S(E)
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