MESON Chess Problem Database

Problem Display
PID: 198687 (qrr3b1/4p3/5p1b/n2n4/7Q/3N1N2/6R1/1k1B3K w - - 0 1)

Brunner, Erich Anselm

National-Zeitung Basel, 1921

(First published on Fri May 6 1921)

qrr3b1/4p3/5p1b/n2n4/7Q/3N1N2/6R1/1k1B3K

#2

6 + 10

1870 Alpine Chess 1921
6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sd2+?
      • 1...Ka1
        • 2.Qa4#
      • 1...Ka2
        • 2.Qa4#
      • 1...Bxd2!
    • 1.Bc2+?
      • 1...Ka1
        • 2.Qa4#
      • 1...Ka2
        • 2.Qa4#
      • 1...Rxc2!
    • 1.Rb2+?
      • 1...Ka1
        • 2.Qa4#
      • 1...Rxb2!
  • Keys
    • 1.Qa4!
      • threat
        • 2.Qa2#
      • 1...Rb2
        • 2.Rxb2#
      • 1...Rc2
        • 2.Bxc2#
      • 1...Bd2
        • 2.Sxd2#
      • 1...Sb3
        • 2.Rb2#
      • 1...Sc4
        • 2.Bc2#
      • 1...Sc6
        • 2.Bc2#
      • 1...Sb7
        • 2.Rb2#
      • 1...Sc3
        • 2.Bc2#
      • 1...Se3
        • 2.Sd2#
      • 1...Sb4
        • 2.Rb2#
      • 1...Sf4
        • 2.Sd2#
      • 1...Sb6
        • 2.Rb2#
      • 1...Sc7
        • 2.Bc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(F)
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • B(e);XS(E)
    • Try
      • B(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(F)
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • R(i);XB(A)
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR(F)
      • Refutation
        • R(h);XR(C)
  • Actual
    • Q(F);
    • Threat
      • QAB1(F)
    • Vars
      • R(h);N_GUARD::R1(C),XR(h)
      • R(i);N_GUARD::B(A),XR(i)
      • B(e);N_GUARD::S(E),XB(e)
      • S(b);S_CUTR(h)::R1(C)
      • S(b);S_CUTR(i)::B(A)
      • S(c);S_CUTR(i)::B(A)
      • S(c);S_CUTB(e)::S(E)
      • S(c);S_CUTR(h)::R1(C)
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