MESON Chess Problem Database

Problem Display
PID: 163169 (2N2K2/2pP4/5N1p/1Pk5/5R2/r1n3Q1/1B5p/r4Bb1 w - - 0 1)

Kunze, Otto

Welt im Bild, 1939

(First published on Sun Aug 13 1939)

2N2K2/2pP4/5N1p/1Pk5/5R2/r1n3Q1/1B5p/r4Bb1

#2

9 + 8

15601 Albrecht-Leiss-Degener Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rc1
      • 2.Bxa3#
    • 1...Rd1
      • 2.Bxa3#
    • 1...Re1
      • 2.Bxa3#
    • 1...Ra2
      • 2.Qxc3#
    • 1...Ra5
      • 2.Qxc3#
    • 1...Ra6
      • 2.Qxc3#
    • 1...Ra7
      • 2.Qxc3#
    • 1...Ra8
      • 2.Qxc3#
    • 1...Bf2
      • 2.Qxf2#
    • 1...Be3
      • 2.Qxe3#
    • 1...Sxb5
      • 2.Rc4#
    • 1...h1B
      • 2.Qxg1#
  • Tries
    • 1.Qg5+?
      • 1...Sd5
        • 2.Qxd5#
      • 1...hxg5!
    • 1.Qg8?
      • threat
        • 2.Qc4#
      • 1...Sd5
        • 2.Qxd5#
      • 1...Ra4!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Qe7#
      • 1...Rxe1
        • 2.Bxa3#
      • 1...Sxb5
        • 2.Rc4#
      • 1...Se2
        • 2.Qb4#
      • 1...Rd1
        • 2.Bxa3#
      • 1...Ra6
        • 2.Qxc3#
      • 1...Be3
        • 2.Qxe3#
      • 1...Se4
        • 2.Rf5#
      • 1...Sd5
        • 2.Se4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(a);N_GUARD::B(B),XR(d)
    • R(d);N_GUARD::QAR2(C),XS(e)
    • R(d);N_GUARD,P_PINS(H)::QAR2(C),XS(e)
    • B(b);N_GUARD::QAB(C),XB(b)
    • S(e);SBLOCK,XP(E)::R1(D)
    • P(c);N_GUARD::QAB(C),XB(b)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::QAR1(C),XS(e)
      • Refutation
        • P(g);XQ(C)
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • S(e);N_GUARD::QAR1(C),XS(e)
      • Refutation
        • R(d);
  • Actual
    • Q(C);
    • Threat
      • QAB(C)
    • Vars
      • R(a);N_GUARD,XQ(C)::B(B),XR(d)
      • S(e);SBLOCK,XP(E)::R1(D)
      • S(e);OGATE::QAB1(C)
      • R(a);N_GUARD::B(B),XR(d)
      • R(d);N_GUARD::QAR2(C),XS(e)
      • B(b);N_GUARD::QAB(C),XB(b)
      • S(e);N_GUARD::R(D)
      • S(e);N_GUARD,SBLOCK::S(F)
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