MESON Chess Problem Database

Problem Display
PID: 233190 (2Rn2q1/Kn1Pb1Nr/2PkPp2/pQ6/4ppN1/8/5B2/8 w - - 0 1)

Kunzelmann, Jens

Freie Presse, 1983

2Rn2q1/Kn1Pb1Nr/2PkPp2/pQ6/4ppN1/8/5B2/8

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe6
      • 2.Se8#
    • 1...Qe8
      • 2.dxe8S#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sxc6+
      • 2.Rxc6#
      • 2.Qxc6#
    • 1...Sxe6
      • 2.Sf5#
    • 1...f3
      • 2.Bg3#
    • 1...f5
      • 2.Qe5#
  • Tries
    • 1.Qb4+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Sc5
        • 2.Qxc5#
        • 2.Qd4#
      • 1...axb4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sc4#
        • 2.Sef5#
        • 2.Qd5#
      • 1...Sxc6+
        • 2.Rxc6#
      • 1...Qxe6
        • 2.Se8#
      • 1...Qxg7
        • 2.Qd5#
      • 1...Rxg7
        • 2.Qd5#
      • 1...fxe3
        • 2.Bg3#
      • 1...Bf8
        • 2.Sef5#
      • 1...Sc5
        • 2.Qb8#
      • 1...Rh5
        • 2.Sc4#
      • 1...f5
        • 2.Sc4#
        • 2.Sexf5#
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(j);N_GUARD,SBLOCK,XP(E)::S(H)
    • Q(j);OGATE::PXQ(j)=S
    • S(f);N_GUARD::QAB1(C),XS(f)
    • S(i);SBLOCK,XP(E)::S(H)
    • P(b);OGATEB::B(A)
    • P(e);N_GUARD::QAB1(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(C)
      • Refutation
        • P(c);XQ(C)
  • Actual
    • S(B);
    • Threat
      • DUALS(3)
    • Vars
      • S(i);CHECK,OGATE,XP(D)::R1(I),XS(i)
      • Q(j);N_GUARD,SBLOCK,XP(E)::S(H)
      • Q(j);XS(H)::QAR1(C)
      • R(h);XS(H)::QAR1(C)
      • P(b);OGATEB,XS(B)::B(A)
      • B(g);::S(B)
      • S(f);OGATE,SBLOCK::QAB(C)
      • R(h);::S(B)
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