MESON Chess Problem Database

Problem Display
PID: 272853 (4Bq1B/2n4r/pp4R1/1Nkr1nR1/1p6/3p1Q1p/2bN1K2/8 w - - 0 1)

Novejarque Iranzo, Francisco

Schackvarlden, 1939

4Bq1B/2n4r/pp4R1/1Nkr1nR1/1p6/3p1Q1p/2bN1K2/8

#2

8 + 12

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Rd4
      • 2.Bxd4#
      • 2.Qc6#
    • 1...Re5
      • 2.Qc6#
    • 1...Rdd7
      • 2.Qc6#
    • 1...Rd8
      • 2.Qc6#
    • 1...Se3
      • 2.Bd4#
    • 1...Sg3
      • 2.Bd4#
    • 1...Sd4
      • 2.Bxd4#
    • 1...Sh4
      • 2.Bd4#
    • 1...Sd6
      • 2.Bd4#
    • 1...Sh6
      • 2.Bd4#
    • 1...Se7
      • 2.Bd4#
    • 1...Sg7
      • 2.Qxf8#
    • 1...Sxb5
      • 2.Rc6#
    • 1...axb5
      • 2.Rc6#
  • Tries
    • 1.Bd4+?
      • 1...Rxd4
        • 2.Qc6#
      • 1...Sxd4!
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qc4#
      • 1...axb5
        • 2.Rc6#
      • 1...Rd4
        • 2.Qxd4#
      • 1...Rh4
        • 2.Qxc7#
      • 1...Bb3
        • 2.Sxb3#
      • 1...Se3
        • 2.Bd4#
      • 1...Sg3
        • 2.Bd4#
      • 1...Sd4
        • 2.Bxd4#
      • 1...Sh4
        • 2.Bd4#
      • 1...Sd6
        • 2.Bd4#
      • 1...Sh6
        • 2.Bd4#
      • 1...Se7
        • 2.Bd4#
      • 1...Sg7
        • 2.Qxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(f);OGATE::QAR1(C)
    • R(f);OGATE,P_SPINS(g)::QAR1(C)
    • S(g);N_GUARD,P_PINQ(C),P_SPINR(f)::B(H)
    • S(g);N_GUARD,P_PINQ(C),P_SPINR(f)::B(H),XS(g)
    • S(g);OGATE,P_PINQ(C),P_SPINR(f)::QAB(C),XQ(l)
    • S(j);SBLOCK,XS(D)::R1(F)
    • P(h);SBLOCK,XS(D)::R1(F)
  • Tries
    • Try
      • B(H);CHECK
      • Vars
        • R(f);OGATE,P_SPINS(g),XB(H)::QAR1(C)
      • Refutation
        • S(g);P_PINQ(C),P_SPINR(f),XB(H)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • P(h);SBLOCK,XS(D)::R1(F)
      • R(f);N_GUARD,P_SPINS(g)::QAB1(C),XR(f)
      • R(k);N_GUARD::QAR2(C),XS(j)
      • B(a);N_GUARD::S(A),XB(a)
      • S(g);N_GUARD,P_PINQ(C),P_SPINR(f)::B(H)
      • S(g);N_GUARD,P_PINQ(C),P_SPINR(f)::B(H),XS(g)
      • S(g);OGATE,P_PINQ(C),P_SPINR(f)::QAB(C),XQ(l)
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