MESON Chess Problem Database

Problem Display
PID: 233189 (b4r2/q2pN3/8/nQp5/p3k3/KpBN1pPn/3P1P2/6bB w - - 0 1)

Kunzelmann, Jens

Freie Presse, 1983

b4r2/q2pN3/8/nQp5/p3k3/KpBN1pPn/3P1P2/6bB

#2

9 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qb8
      • 2.Sxc5#
    • 1...Qa6
      • 2.Sxc5#
    • 1...Qb7
      • 2.Sxc5#
    • 1...Sc4+
      • 2.Qxc4#
    • 1...Sb7
      • 2.Qc4#
  • Tries
    • 1.Sc1?
      • threat
        • 2.Qe2#
        • 2.Qd3#
        • 2.d3#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Bxf2
        • 2.Qd3#
      • 1...Sxf2
        • 2.Qe2#
      • 1...Qa6
        • 2.d3#
      • 1...c4
        • 2.Qe5#
      • 1...Sf4!
    • 1.Sb2?
      • threat
        • 2.Qe2#
        • 2.Qd3#
        • 2.d3#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Bxf2
        • 2.Qd3#
      • 1...Sxf2
        • 2.Qe2#
      • 1...Qa6
        • 2.d3#
      • 1...c4
        • 2.Qe5#
      • 1...Sf4!
    • 1.Sf4?
      • threat
        • 2.Qe2#
        • 2.Qd3#
        • 2.d3#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Rxf4
        • 2.Qe2#
        • 2.d3#
      • 1...Bxf2
        • 2.Qd3#
      • 1...Sxf2
        • 2.Qe2#
      • 1...Qa6
        • 2.d3#
      • 1...c4
        • 2.Qe5#
      • 1...Sxf4!
    • 1.Se5?
      • threat
        • 2.Qe2#
        • 2.Qd3#
        • 2.d3#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Bxf2
        • 2.Qd3#
      • 1...Sxf2
        • 2.Qe2#
      • 1...Sf4
        • 2.Bxf3#
      • 1...Qa6
        • 2.d3#
      • 1...c4!
  • Keys
    • 1.Se1!
      • threat
        • 2.Qe2#
        • 2.Qd3#
        • 2.d3#
      • 1...Sc4+
        • 2.Qxc4#
      • 1...Bxf2
        • 2.Qd3#
      • 1...Sxf2
        • 2.Qe2#
      • 1...Qa6
        • 2.d3#
      • 1...Sf4
        • 2.Bxf3#
      • 1...c4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::S(F),XP(h)
    • S(g);CHECK,N_GUARD::QAR2(H),XS(g)
    • S(g);N_GUARD::QAR2(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);CHECK,N_GUARD::QAR2(H),XS(g)
        • B(a);XP(C)::QAB1(H)
        • S(d);XP(C)::QAR2(H)
        • Q(i);::P(B)
        • P(h);OGATE::QAR1(H)
      • Refutation
        • S(d);
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);CHECK,N_GUARD::QAR2(H),XS(g)
        • B(a);XP(C)::QAB1(H)
        • S(d);XP(C)::QAR2(H)
        • Q(i);::P(B)
        • P(h);OGATE::QAR1(H)
      • Refutation
        • S(d);
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);CHECK,N_GUARD::QAR2(H),XS(g)
        • B(a);XP(C)::QAB1(H)
        • S(d);XP(C)::QAR2(H)
        • Q(i);::P(B)
        • P(h);OGATE::QAR1(H)
      • Refutation
        • S(d);XS(F)
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • S(g);CHECK,N_GUARD::QAR2(H),XS(g)
        • B(a);XP(C)::QAB1(H)
        • S(d);XP(C)::QAR2(H)
        • S(d);S_CUTR(l)::B(A),XP(c)
        • Q(i);::P(B)
      • Refutation
        • P(h);
  • Actual
    • S(F);
    • Threat
      • DUALS(3)
    • Vars
      • S(g);CHECK,N_GUARD::QAR2(H),XS(g)
      • B(a);XP(C)::QAB1(H)
      • S(d);XP(C)::QAR2(H)
      • Q(i);::P(B)
      • S(d);S_CUTR(l)::B(A),XP(c)
      • P(h);OGATE::QAR1(H)
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