MESON Chess Problem Database

Problem Display
PID: 227056 (4RBb1/b7/r1r1N3/1B3P2/7n/N2P4/1Ppk1pP1/5Q1K w - - 0 1)

Kupper, Josef

4th HM., Schweizerische Schachzeitung, 1957

4RBb1/b7/r1r1N3/1B3P2/7n/N2P4/1Ppk1pP1/5Q1K

#2

11 + 8

15257 Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Bh6#
    • 1...Rab6
      • 2.Bh6#
    • 1...Rc4
      • 2.Sxc4#
    • 1...Rc5
      • 2.Bh6#
    • 1...Rcb6
      • 2.Sc4#
      • 2.Bh6#
    • 1...Rd6
      • 2.Sc4#
    • 1...Rxe6
      • 2.Sc4#
    • 1...Bc5
      • 2.Sc4#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Re2#
      • 1...Re6
        • 2.Sc4#
      • 1...Be6
        • 2.Bh6#
      • 1...c1S!
    • 1.Bb4+?
      • 1...Rc3
        • 2.Sc4#
      • 1...Ke3!
    • 1.Qc1+?
      • 1...Ke2
        • 2.Sd4#
        • 2.Sf4#
      • 1...Kxc1!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Re2#
      • 1...Re6
        • 2.Sc4#
      • 1...Be6
        • 2.Bh6#
      • 1...c1S
        • 2.Sb1#
      • 1...Rc4
        • 2.Sb3#
      • 1...Bc4
        • 2.Bb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(b);S_FLIGHT::B(K)
    • R(e);S_CUTB(g)::B(K)
    • R(f);N_GUARD::S(E),XR(f)
    • R(f);S_CUTB(g)::B(K)
    • R(f);N_GUARD::S(E)
    • R(f);N_GUARD,XS(I)::S(E)
    • B(g);S_CUTR(f)::S(E)
  • Tries
    • Try
      • S(I);
      • Threat
        • R1(J)
      • Vars
        • R(f);S_CUTB(h)::S(E)
        • B(h);S_CUTR(f)::B(K)
      • Refutation
        • P(a);
    • Try
      • B(K);CHECK
      • Vars
        • R(f);P_SPINR(f)::S(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • S(I);
    • Threat
      • R1(J)
    • Vars
      • R(f);N_GUARD,S_CUTB(h)::S(E)
      • B(h);S_CUTR(f)::B(K)
      • P(a);N_GUARD::S(E)
      • R(f);S_CUTB(h)::S(I)
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