MESON Chess Problem Database

Problem Display
PID: 189346 (8/3p1Np1/2p5/1RNp4/2Bk1pK1/1Pp1p3/3p4/7Q w - - 0 1)

Kummer, Konrad

Schweizerische Schachzeitung, 1972

8/3p1Np1/2p5/1RNp4/2Bk1pK1/1Pp1p3/3p4/7Q

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...d1Q+
      • 2.Qxd1#
    • 1...d1S
      • 2.Qxd1#
    • 1...d1B+
      • 2.Qxd1#
    • 1...d1R
      • 2.Qxd1#
    • 1...c2
      • 2.Qa1#
    • 1...e2
      • 2.Qg1#
    • 1...dxc4
      • 2.Qe4#
    • 1...cxb5
      • 2.Qxd5#
    • 1...d6
      • 2.Se6#
    • 1...g5
      • 2.Qh8#
    • 1...g6
      • 2.Qh8#
  • Tries
    • 1.Kxf4?
      • 1...dxc4
        • 2.Qe4#
      • 1...cxb5
        • 2.Qxd5#
      • 1...c2
        • 2.Qa1#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...e2
        • 2.Qg1#
      • 1...d6
        • 2.Se6#
      • 1...g6
        • 2.Qh8#
      • 1...g5+!
    • 1.Kf5?
      • 1...dxc4
        • 2.Qe4#
      • 1...cxb5
        • 2.Qxd5#
      • 1...c2
        • 2.Qa1#
      • 1...e2
        • 2.Qg1#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...f3
        • 2.Qh4#
      • 1...d6
        • 2.Se6#
      • 1...g5
        • 2.Qh8#
      • 1...g6+!
    • 1.Ra5?
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1B+
        • 2.Qxd1#
      • 1...dxc4
        • 2.Qe4#
      • 1...c2
        • 2.Qa1#
      • 1...e2
        • 2.Qg1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...d6
        • 2.Se6#
      • 1...g5
        • 2.Qh8#
      • 1...g6
        • 2.Qh8#
      • 1...f3!
    • 1.Qb1?
      • threat
        • 2.Qd3#
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1B+
        • 2.Qxd1#
      • 1...dxc4
        • 2.Qe4#
      • 1...c2
        • 2.Qa1#
        • 2.Qb2#
      • 1...d1R
        • 2.Qxd1#
      • 1...cxb5!
    • 1.Qf1?
      • threat
        • 2.Qd3#
        • 2.Qxf4#
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1B+
        • 2.Qxd1#
      • 1...dxc4
        • 2.Qxc4#
      • 1...c2
        • 2.Qd3#
        • 2.Qa1#
      • 1...e2
        • 2.Qg1#
        • 2.Qf2#
        • 2.Qxf4#
      • 1...d1R
        • 2.Qxd1#
        • 2.Qxf4#
      • 1...f3
        • 2.Qd3#
      • 1...g5
        • 2.Qd3#
      • 1...cxb5!
  • Keys
    • 1.Kg5!
      • 1...dxc4
        • 2.Qe4#
      • 1...cxb5
        • 2.Qxd5#
      • 1...c2
        • 2.Qa1#
      • 1...e2
        • 2.Qg1#
      • 1...d1Q
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...d1R
        • 2.Qxd1#
      • 1...f3
        • 2.Qh4#
      • 1...d6
        • 2.Se6#
      • 1...g6
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(a);CHECK,OGATEB::QAR(A),XQ(a)
    • P(a);OGATEB::QAR(A),XS(a)
    • P(a);CHECK,OGATEB::QAR(A),XB(a)
    • P(a);OGATEB::QAR(A),XR(a)
    • P(b);OGATEB::QAB(A)
    • P(c);OGATEB::QAB(A)
    • P(f);N_GUARD,XB(C)::QAR1(A)
    • P(g);N_GUARD,XR(E)::QAR1(A),XP(f)
    • P(h);N_GUARD::S(F)
    • P(i);OGATEB::QAB(A)
  • Tries
    • Try
      • K(D);P-FLIGHT,XP(e)
      • Vars
        • P(f);N_GUARD,XB(C)::QAR1(A)
        • P(g);N_GUARD,XR(E)::QAR1(A),XP(f)
        • P(b);OGATEB::QAB(A)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
        • P(c);OGATEB::QAB(A)
        • P(h);N_GUARD::S(F)
        • P(i);OGATEB::QAB(A)
      • Refutation
        • P(i);CHECK
    • Try
      • K(D);S_FLIGHT
      • Vars
        • P(f);N_GUARD,XB(C)::QAR1(A)
        • P(g);N_GUARD,XR(E)::QAR1(A),XP(f)
        • P(b);OGATEB::QAB(A)
        • P(c);OGATEB::QAB(A)
        • P(a);OGATEB::QAR(A),XQ(a)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XB(a)
        • P(a);OGATEB::QAR(A),XR(a)
        • P(e);OGATEB::QAR(A)
        • P(h);N_GUARD::S(F)
        • P(i);OGATEB::QAB(A)
      • Refutation
        • P(i);CHECK
    • Try
      • R(E);
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XQ(a)
        • P(a);CHECK,OGATEB::QAR(A),XB(a)
        • P(f);N_GUARD,XB(C)::QAR1(A)
        • P(b);OGATEB::QAB(A)
        • P(c);OGATEB::QAB(A)
        • P(a);OGATEB::QAR(A),XS(a)
        • P(a);OGATEB::QAR(A),XR(a)
        • P(h);N_GUARD::S(F)
        • P(i);OGATEB::QAB(A)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XQ(a)
        • P(a);CHECK,OGATEB::QAR(A),XB(a)
        • P(f);N_GUARD,XB(C)::QAR1(A)
        • P(a);OGATEB::QAR(A),XR(a)
      • Refutation
        • P(g);XR(E)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);CHECK,OGATEB::QAR(A),XQ(a)
        • P(a);CHECK,OGATEB::QAR(A),XB(a)
        • P(f);OGATE,XB(C)::QAR1(A),XP(f)
        • P(e);::QAR1(A)
        • P(i);::QAR1(A)
      • Refutation
        • P(g);XR(E)
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • P(f);N_GUARD,XB(C)::QAR1(A)
      • P(g);N_GUARD,XR(E)::QAR1(A),XP(f)
      • P(b);OGATEB::QAB(A)
      • P(c);OGATEB::QAB(A)
      • P(a);OGATEB::QAR(A),XQ(a)
      • P(a);OGATEB::QAR(A),XS(a)
      • P(a);OGATEB::QAR(A),XB(a)
      • P(a);OGATEB::QAR(A),XR(a)
      • P(e);OGATEB::QAR(A)
      • P(h);N_GUARD::S(F)
      • P(i);OGATEB::QAB(A)
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