MESON Chess Problem Database

Problem Display
PID: 35625 (1r6/B4N2/3P4/3n4/B1k1P1Q1/P2p4/1R3b1q/KN4n1 w - - 0 1)

Kupper, Josef

Basler Zeitung, 1991

1r6/B4N2/3P4/3n4/B1k1P1Q1/P2p4/1R3b1q/KN4n1

#2

10 + 7

3454 kunstschach (1987-1996) (Hoffmann) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sxe5#
    • 1...Qxd6
      • 2.Sxd6#
    • 1...Qh1
      • 2.Se5#
    • 1...Qg2
      • 2.Se5#
    • 1...Qh3
      • 2.Se5#
    • 1...Qh4
      • 2.Se5#
    • 1...Qh6
      • 2.Se5#
    • 1...Qh7
      • 2.Se5#
    • 1...Rb5
      • 2.Bxb5#
    • 1...Ra8
      • 2.Bb5#
    • 1...Rc8
      • 2.Bb5#
    • 1...Rd8
      • 2.Bb5#
    • 1...Re8
      • 2.Bb5#
    • 1...Rf8
      • 2.Bb5#
    • 1...Rg8
      • 2.Bb5#
    • 1...Rh8
      • 2.Bb5#
    • 1...Sc3
      • 2.Sd2#
    • 1...Sf4
      • 2.Se5#
  • Tries
    • 1.Rc2+?
      • 1...Sc3
        • 2.Sd2#
        • 2.Rxc3#
        • 2.Qe6#
      • 1...dxc2!
    • 1.Qe6?
      • threat
        • 2.Qxd5#
      • 1...Qxd6
        • 2.Sxd6#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Rb5
        • 2.Bxb5#
      • 1...Qh5!
    • 1.Qc8+?
      • 1...Rxc8
        • 2.Bb5#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Sc7!
    • 1.exd5+?
      • 1...Kxd5
        • 2.Sc3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...Qf4!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qxd5#
      • 1...Qxd6
        • 2.Sxd6#
      • 1...Sb6
        • 2.Rb4#
      • 1...Sf6
        • 2.Qc1#
      • 1...Qe5
        • 2.Sxe5#
      • 1...Qh5
        • 2.Se5#
      • 1...Rb5
        • 2.Bxb5#
      • 1...Sc3
        • 2.Sd2#
      • 1...Se3
        • 2.Qc5#
      • 1...Sb4
        • 2.Bb3#
      • 1...Sf4
        • 2.Se5#
      • 1...Sc7
        • 2.Qc1#
      • 1...Se7
        • 2.Qc1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 13
  • Sets
    • Q(c);N_GUARD,P_PINR(C)::S(J),XQ(c)
    • Q(c);XP(H)::S(J),XQ(c)
    • Q(c);N_GUARD::S(J)
    • R(g);N_GUARD::B(E),XR(g)
    • R(g);N_GUARD::B(E)
    • S(f);SBLOCK::S(B)
    • S(f);S_CUTQ(c)::S(J)
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • P(d);XR(C)
    • Try
      • Q(G);P_PINS(f)
      • Threat
        • QAB1(G),XS(f)
      • Vars
        • Q(c);XP(H)::S(J),XQ(c)
        • Q(c);N_GUARD,P_PINR(C)::S(J),XQ(c)
        • R(g);N_GUARD::B(E),XR(g)
      • Refutation
        • Q(c);
    • Try
      • Q(G);CHECK
      • Vars
        • R(g);XQ(G)::B(E)
        • B(b);N_GUARD,P_SPINB(b)::QAR1(G),XB(b)
      • Refutation
        • S(f);P_SPINS(f)
    • Try
      • P(F);CHECK,XS(f)
      • Vars
        • K(e);S_FLIGHT,XP(F)::S(B)
        • B(b);N_GUARD,P_PINR(C),P_SPINB(b)::QAR1(G),XB(b)
      • Refutation
        • Q(c);P_SPINQ(c)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G),XS(f)
    • Vars
      • Q(c);XP(H)::S(J),XQ(c)
      • S(f);N_GUARD,S_CUTR(g)::R1(C)
      • S(f);N_GUARD::QAR(G)
      • Q(c);N_GUARD,P_PINR(C)::S(J),XQ(c)
      • Q(c);N_GUARD::S(J)
      • R(g);N_GUARD::B(E),XR(g)
      • S(f);SBLOCK::S(B)
      • S(f);OGATE::QAR1(G)
      • S(f);S_CUTR(g)::B(E)
      • S(f);S_CUTQ(c)::S(J)
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