MESON Chess Problem Database

Problem Display
PID: 258010 (B1n1K2N/p1RPnR1p/1P1k3r/5p1q/b5p1/1rN1QP2/8/8 w - - 0 1)

Boros, Sandor

British Chess Magazine, 1934

B1n1K2N/p1RPnR1p/1P1k3r/5p1q/b5p1/1rN1QP2/8/8

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf7+
      • 2.Sxf7#
    • 1...Rb5
      • 2.d8Q#
      • 2.d8R#
    • 1...Re6
      • 2.Qc5#
    • 1...Bxd7+
      • 2.Rxd7#
    • 1...Sc6
      • 2.dxc8S#
    • 1...Sg6
      • 2.Rf6#
  • Tries
    • 1.Sb5+?
      • 1...Rxb5
        • 2.d8Q#
        • 2.d8R#
      • 1...Bxb5!
    • 1.Rc6+?
      • 1...Sxc6
        • 2.dxc8S#
      • 1...Bxc6!
    • 1.Qd4+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...Ke6!
  • Keys
    • 1.f4!
      • threat
        • 2.Qe5#
      • 1...Qxf7+
        • 2.Sxf7#
      • 1...Bxd7+
        • 2.Rxd7#
      • 1...Rb5
        • 2.d8Q#
        • 2.d8R#
      • 1...Re6
        • 2.Qc5#
      • 1...Sc6
        • 2.dxc8S#
      • 1...Sg6
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • Q(e);CHECK,XR(G)::S(J),XQ(e)
    • R(a);N_PINP(F)::P=Q
    • R(g);SBLOCK::QAB1(B)
    • B(b);CHECK,OGATE,XP(F)::R1(E),XB(b)
    • S(i);N_PINP(F)::PXS(k)=S
    • S(i);N_PINR(G)::R(G)
  • Tries
    • Try
      • S(A);CHECK,N_SPINP(F)
      • Vars
        • R(a);XS(A)::P=Q
      • Refutation
        • B(b);P_PINP(F),XS(A)
    • Try
      • R(E);CHECK,N_SPINP(F)
      • Vars
        • S(i);N_GUARD,S_CUTB(b),XR(E)::PXS(k)=S
      • Refutation
        • B(b);P_PINP(F),XR(E)
    • Try
      • Q(B);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAR1(B),XS(i)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • P(C);
    • Threat
      • QAB1(B)
    • Vars
      • Q(e);CHECK,XR(G)::S(J),XQ(e)
      • B(b);CHECK,OGATE,XP(F)::R1(E),XB(b)
      • R(a);N_PINP(F)::P=Q
      • R(g);SBLOCK::QAB1(B)
      • S(i);N_PINP(F)::PXS(k)=S
      • S(i);N_PINR(G)::R(G)
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