MESON Chess Problem Database

Problem Display
PID: 260950 (4k3/3p1pK1/3P4/2P1NpB1/1r6/4Q3/2b5/4R3 w - - 0 1)

Grimm, Kaspar

Neue Zurcher Zeitung, 1943

4k3/3p1pK1/3P4/2P1NpB1/1r6/4Q3/2b5/4R3

#2

7 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Sd3#
    • 1...Rb2
      • 2.Sd3#
    • 1...Rb3
      • 2.Sd3#
    • 1...Rb5
      • 2.Sd3#
    • 1...Rb6
      • 2.Sd3#
    • 1...Rb7
      • 2.Sd3#
    • 1...Rb8
      • 2.Sd3#
    • 1...Bd1
      • 2.Sc4#
    • 1...Bb3
      • 2.Sc4#
    • 1...Ba4
      • 2.Sc4#
  • Tries
    • 1.c6?
      • threat
        • 2.cxd7#
      • 1...dxc6
        • 2.d7#
      • 1...Rb7
        • 2.Sd3#
      • 1...Ba4
        • 2.Sc4#
      • 1...f6!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qxf7#
      • 1...Rxb3
        • 2.Sd3#
      • 1...Bxb3
        • 2.Sc4#
      • 1...f6
        • 2.Qg8#
      • 1...Rc4
        • 2.Qb8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(b);N_GUARD::QAR(B)+S(D)
    • B(a);N_GUARD::QAR(B)+S(D)
  • Tries
    • Try
      • P(C);
      • Threat
        • P(C),XP(d)
      • Vars
        • P(d);OGATE,XP(C)::P(F)
        • R(b);N_GUARD::QAR(B)+S(D)
        • B(a);N_GUARD::QAR(B)+S(D)
      • Refutation
        • P(e);
  • Actual
    • Q(B);
    • Threat
      • QAB1(B),XP(e)
    • Vars
      • R(b);N_GUARD,XQ(B)::R(A)+S(D)
      • B(a);N_GUARD,XQ(B)::R(A)+S(D)
      • P(e);OGATE::QAR2(B)
      • R(b);OGATE::QAR(B)
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