MESON Chess Problem Database

Problem Display
PID: 139076 (1n1r4/B7/1R1NP1p1/k2K2Q1/p7/Rp4p1/1nbNPP2/3r4 w - - 0 1)

Guidelli, Giorgio

Il Secolo, 1915

1n1r4/B7/1R1NP1p1/k2K2Q1/p7/Rp4p1/1nbNPP2/3r4

#2

10 + 10

35 L'Italia Scacchistica 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd2+
      • 2.Qxd2#
    • 1...Rc8
      • 2.Sb7#
    • 1...Re8
      • 2.Sb7#
    • 1...Rf8
      • 2.Sb7#
    • 1...Rg8
      • 2.Sb7#
    • 1...Rh8
      • 2.Sb7#
    • 1...Bd3
      • 2.Sxb3#
    • 1...Be4+
      • 2.Kxe4#
    • 1...Sd3
      • 2.Sc4#
    • 1...Sa6
      • 2.Rb5#
    • 1...Sd7
      • 2.Sb7#
  • Tries
    • 1.Qe5?
      • threat
        • 2.Kd4#
        • 2.Qc3#
      • 1...Rxd6+
        • 2.Kxd6#
      • 1...Be4+
        • 2.Kxe4#
      • 1...Rc8
        • 2.Sb7#
      • 1...Bd3
        • 2.Sxb3#
        • 2.Qc3#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Kxc4#
        • 2.Qc3#
      • 1...Sa6
        • 2.Rb5#
      • 1...Sc6
        • 2.Kxc6#
      • 1...Sd7
        • 2.Sb7#
        • 2.Qc3#
      • 1...Rxd2+!
  • Keys
    • 1.e4!
      • threat
        • 2.Kd4#
      • 1...Rxd2+
        • 2.Qxd2#
      • 1...Rxd6+
        • 2.Kxd6#
      • 1...Bxe4+
        • 2.Kxe4#
      • 1...Rc8
        • 2.Sb7#
      • 1...Rf8
        • 2.Sb7#
      • 1...Bd3
        • 2.Sxb3#
      • 1...Sd3
        • 2.Sc4#
      • 1...Sc4
        • 2.Kxc4#
      • 1...Sa6
        • 2.Rb5#
      • 1...Sc6
        • 2.Kxc6#
      • 1...Sd7
        • 2.Sb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • R(a);CHECK,OGATE,P_PINS(H),XS(A)::QAB(F),XR(a)
    • R(j);::S(H)
    • B(c);N_PINS(A),P_PINS(H)::S(A),XP(d)
    • B(c);CHECK::QAR(F)+K(E),XB(c)
    • S(b);N_PINS(A),P_PINS(H)::S(A)
    • S(i);SBLOCK::R1(G)
    • S(i);::S(H)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • R(j);CHECK,XS(H)::QAR(F)+K(E),XR(j)
        • B(c);CHECK::QAR(F)+K(E),XB(c)
        • R(j);::S(H)
        • S(b);N_PINS(A),P_PINS(H)::S(A)
        • S(i);SBLOCK::R1(G)
        • S(i);::QAR(F)+K(E),XS(i)
      • Refutation
        • R(a);CHECK,P_PINS(H),XS(A)
  • Actual
    • P(B);
    • Threat
      • QAR(F)+K(E)
    • Vars
      • R(a);CHECK,OGATE,P_PINS(H),XS(A)::QAB(F),XR(a)
      • R(j);CHECK,XS(H)::QAR(F)+K(E),XR(j)
      • B(c);CHECK,XP(B)::QAR(F)+K(E),XB(c)
      • R(j);::S(H)
      • B(c);N_PINS(A),P_PINS(H)::S(A),XP(d)
      • S(b);N_PINS(A),P_PINS(H)::S(A)
      • S(b);::QAR(F)+K(E),XS(b)
      • S(i);SBLOCK::R1(G)
      • S(i);::QAR(F)+K(E),XS(i)
      • S(i);::S(H)
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