MESON Chess Problem Database

Problem Display
PID: 193489 (1RnB2r1/b1P4r/1Pk3qR/2N2Np1/1P6/3Q4/3K4/8 w - - 0 1)

Foschini, Ettore

L'Eco degli Scacchi, 1915

1RnB2r1/b1P4r/1Pk3qR/2N2Np1/1P6/3Q4/3K4/8

#2

10 + 7

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxh6
      • 2.Qd7#
    • 1...Rd7
      • 2.Qxd7#
    • 1...Rhh8
      • 2.Qd7#
    • 1...Rxd8
      • 2.cxd8S#
    • 1...Bxb8
      • 2.cxb8S#
    • 1...Se7
      • 2.Qd7#
  • Tries
    • 1.Se7+?
      • 1...Sxe7
        • 2.Qd7#
      • 1...Rxe7!
    • 1.Rxg6+?
      • 1...Sd6
        • 2.Rxd6#
      • 1...Rxg6!
  • Keys
    • 1.Qc4!
      • threat
        • 2.b5#
      • 1...Qd6+
        • 2.Sd4#
      • 1...Rd7+
        • 2.Sd3#
      • 1...Rxd8+
        • 2.cxd8S#
      • 1...Bxb8
        • 2.cxb8S#
      • 1...Sd6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(e);N_GUARD,N_SPINQ(c),XR(G)::QAB1(B)
    • R(e);N_GUARD,P_PINQ(B)::QAB1(B),XR(e)
    • R(e);N_GUARD::QAB1(B)
    • R(g);OGATE,P_PINQ(B),XB(J)::PXR(g)=S
    • B(d);OGATE,XR(I)::PXB(d)=S
    • S(f);S_CUTR(e)::QAB1(B)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • S(f);XS(E)::QAB1(B)
      • Refutation
        • R(e);XS(E)
    • Try
      • R(G);CHECK,XQ(c)
      • Vars
        • S(f);N_GUARD,P_SPINS(f)::R1(G),XS(f)
      • Refutation
        • R(g);XR(G)
  • Actual
    • Q(B);
    • Threat
      • P(C)
    • Vars
      • Q(c);CHECK::S(E)
      • R(e);CHECK,SBLOCK::QAR(B)+S(D)
      • R(g);CHECK,OGATE,XB(J)::PXR(g)=S
      • B(d);OGATE,XR(I)::PXB(d)=S
      • S(f);N_SPINQ(c),SBLOCK::S(E)
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Developed and maintained by Brian Stephenson.
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