MESON Chess Problem Database

Problem Display
PID: 73381 (b4R2/7Q/7B/4p1KB/2p4P/N1Pnk2N/qR5p/4rn2 w - - 0 1)

Buchwald, Julius

2nd HM., Schweizerische Arbeiter Schachzeitung, 1947

b4R2/7Q/7B/4p1KB/2p4P/N1Pnk2N/qR5p/4rn2

#2

10 + 9

5759 Selected Compositions of Julius Buchwald 2005

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Sxc4#
    • 1...Qa1
      • 2.Sxc4#
    • 1...Qxb2
      • 2.Sxc4#
    • 1...Bf3
      • 2.Rxf3#
    • 1...Sd2
      • 2.Sc2#
    • 1...Sc1
      • 2.Kg4#
      • 2.Kf6#
    • 1...Sxb2
      • 2.Kf6#
    • 1...Sf2
      • 2.Kf6#
    • 1...Sb4
      • 2.Kg4#
      • 2.Kf6#
    • 1...Sc5
      • 2.Kg4#
      • 2.Kf6#
  • Tries
    • 1.Kg6+?
      • 1...Ke4
        • 2.Bf3#
      • 1...Sf4+!
    • 1.Rxa2?
      • threat
        • 2.Sxc4#
      • 1...Sb2
        • 2.Kf6#
      • 1...Sd2
        • 2.Sc2#
      • 1...Bd5!
    • 1.Re2+?
      • 1...Qxe2
        • 2.Sxc4#
      • 1...Rxe2!
    • 1.Qxd3+?
      • 1...cxd3
        • 2.Kf5#
      • 1...Kxd3!
    • 1.Qa7+?
      • 1...Ke4
        • 2.Bf3#
      • 1...Sc5!
  • Keys
    • 1.Sf2!
      • threat
        • 2.Sg4#
      • 1...Qxb2
        • 2.Sxc4#
      • 1...Sxb2
        • 2.Kg6#
      • 1...Sxf2
        • 2.Kf6#
      • 1...Sf4
        • 2.Qa7#
      • 1...Bf3
        • 2.Rxf3#
      • 1...Sd2
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(c);N_GUARD::S(B),XP(g)
    • Q(c);N_GUARD,XR(A)::S(B),XP(g)
    • B(i);N_GUARD::R1(J),XB(i)
    • S(b);SBLOCK::S(B)
    • S(e);N_GUARD,XR(A)::B(H)+K(F)
    • S(e);N_GUARD::B(H)+K(F)
  • Tries
    • Try
      • K(F);CHECK,P-FLIGHT
      • Vars
        • K(f);P-FLIGHT::B(G)
      • Refutation
        • S(e);CHECK,P_SPINS(e)
    • Try
      • R(A);XQ(c)
      • Threat
        • S(B),XP(g)
      • Vars
        • S(e);N_GUARD::B(H)+K(F)
        • S(b);SBLOCK::S(B)
      • Refutation
        • B(i);
    • Try
      • R(A);CHECK
      • Vars
        • Q(c);XR(A)::S(B),XP(g)
      • Refutation
        • R(a);XR(A)
    • Try
      • Q(I);CHECK,XS(e)
      • Vars
        • P(g);SBLOCK,XQ(I)::B(H)+K(F)
      • Refutation
        • K(f);P-FLIGHT,XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(f);P-FLIGHT::B(G)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • S(D);
    • Threat
      • S(D)
    • Vars
      • Q(c);N_GUARD,XR(A)::S(B),XP(g)
      • S(e);N_GUARD,XR(A)::B(H)+K(F)
      • S(e);N_GUARD,XS(D)::B(H)+K(F)
      • S(e);N_GUARD::QAB(I)
      • B(i);N_GUARD::R1(J),XB(i)
      • S(b);SBLOCK::S(B)
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