MESON Chess Problem Database

Problem Display
PID: 264079 (5R2/1p3nB1/2BN4/3N1rp1/8/Rn1r1kPP/3p4/3K2Q1 w - - 0 1)

Feldmann, Tibor (aka Florian, Tibor)

3rd Comm., Tijdschrift vd KNSB, 1937

5R2/1p3nB1/2BN4/3N1rp1/8/Rn1r1kPP/3p4/3K2Q1

#2

10 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rdxd5
      • 2.Rxb3#
    • 1...Rfxd5
      • 2.Rxf7#
    • 1...Sa1
      • 2.Rxd3#
    • 1...Sd4
      • 2.Rxd3#
    • 1...Sa5
      • 2.Rxd3#
    • 1...Se5
      • 2.Rxf5#
    • 1...Sd8
      • 2.Rxf5#
    • 1...Sh8
      • 2.Rxf5#
  • Tries
    • 1.Sb4+?
      • 1...Rdd5
        • 2.Rxb3#
      • 1...Rfd5
        • 2.Rxf7#
      • 1...bxc6!
    • 1.Sb6+?
      • 1...Rdd5
        • 2.Rxb3#
      • 1...Rfd5
        • 2.Rxf7#
      • 1...bxc6!
    • 1.Sc7+?
      • 1...Rdd5
        • 2.Rxb3#
      • 1...Rfd5
        • 2.Rxf7#
      • 1...bxc6!
    • 1.Se7+?
      • 1...Rdd5
        • 2.Rxb3#
      • 1...Rfd5
        • 2.Rxf7#
      • 1...bxc6!
    • 1.Sxf7?
      • threat
        • 2.Sxg5#
      • 1...Ke4
        • 2.Sc3#
        • 2.Sf6#
      • 1...g4
        • 2.Sg5#
      • 1...Rxf7!
    • 1.Qh1+?
      • 1...Kf2
        • 2.Se4#
      • 1...Kxg3!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qh1#
      • 1...Kxe4
        • 2.Sc3#
      • 1...Rdxd5
        • 2.Sxd2#
      • 1...Rfxd5
        • 2.Sxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(c);OGATEB,P_SPINR(c),P_SPINS(b),XS(F)::R(C),XS(b)
    • R(e);OGATEB,P_SPINR(e),P_SPINS(h),XS(F)::R(J),XS(h)
    • S(b);OGATE,P_SPINR(c)::R(C),XR(c)
    • S(h);OGATE,P_SPINR(e)::R(J),XR(e)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(c);P_SPINR(c),P_SPINS(b),S_CUTP(g),S_CUTR(e)::R(C),XS(b)
        • R(e);P_SPINR(e),P_SPINS(h),S_CUTP(g),S_CUTR(c)::R(J),XS(h)
      • Refutation
        • P(g);XB(G)
    • Try
      • S(F);CHECK
      • Vars
        • R(c);P_SPINR(c),P_SPINS(b),S_CUTP(g),S_CUTR(e)::R(C),XS(b)
        • R(e);P_SPINR(e),P_SPINS(h),S_CUTP(g),S_CUTR(c)::R(J),XS(h)
      • Refutation
        • P(g);XB(G)
    • Try
      • S(F);CHECK
      • Vars
        • R(c);P_SPINR(c),P_SPINS(b),S_CUTP(g),S_CUTR(e)::R(C),XS(b)
        • R(e);P_SPINR(e),P_SPINS(h),S_CUTP(g),S_CUTR(c)::R(J),XS(h)
      • Refutation
        • P(g);XB(G)
    • Try
      • S(F);CHECK
      • Vars
        • R(c);P_SPINR(c),P_SPINS(b),S_CUTP(g),S_CUTR(e)::R(C),XS(b)
        • R(e);P_SPINR(e),P_SPINS(h),S_CUTP(g),S_CUTR(c)::R(J),XS(h)
      • Refutation
        • P(g);XB(G)
    • Try
      • S(H);XS(h)
      • Threat
        • S(H),XP(f)
      • Vars
        • P(f);::S(H)
      • Refutation
        • R(e);P_SPINR(e),XS(H)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);P-FLIGHT::S(H)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
  • Actual
    • S(H);
    • Threat
      • QAB(B)
    • Vars
      • K(d);S_FLIGHT,XS(H)::B(G)+S(F),DCHECK
      • R(c);N_GUARD,P_SPINS(b),XS(F)::S(H),XP(a)
      • R(e);N_GUARD,P_SPINS(h),XS(F)::S(H),XP(f)
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Developed and maintained by Brian Stephenson.
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