MESON Chess Problem Database

Problem Display
PID: 202309 (bNnr1B2/1n3p2/K1Q1r3/p3b2q/3k4/1PpN4/2P2P2/3R3B w - - 0 1)

Grabowski, Kazimierz

5th HM., Il Secolo, 1923

bNnr1B2/1n3p2/K1Q1r3/p3b2q/3k4/1PpN4/2P2P2/3R3B

#2

10 + 11

6490 yacpdb 2020
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxh1
      • 2.Se1#
    • 1...Qh2
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sf4#
      • 2.Sc5#
    • 1...Qh4
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sf4#
      • 2.Sc5#
    • 1...Qg5
      • 2.Sf4#
    • 1...Qh6
      • 2.Sf4#
    • 1...Qh8
      • 2.Sc1#
      • 2.Se1#
      • 2.Sb2#
      • 2.Sb4#
      • 2.Sf4#
      • 2.Sc5#
    • 1...Rxc6+
      • 2.Sxc6#
    • 1...Re7
      • 2.Qa4#
      • 2.Qe4#
      • 2.Qc4#
    • 1...Ree8
      • 2.Qa4#
      • 2.Qe4#
      • 2.Qc4#
    • 1...Bd6
      • 2.Qc4#
    • 1...Sc5+
      • 2.Bxc5#
    • 1...Sbd6
      • 2.Qc5#
    • 1...Sb6
      • 2.Qe4#
    • 1...Scd6
      • 2.Qd5#
  • Tries
    • 1.Bb4?
      • threat
        • 2.Bxc3#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Sc5+
        • 2.Bxc5#
      • 1...axb4!
  • Keys
    • 1.Ra1!
      • threat
        • 2.Ra4#
      • 1...Rxc6+
        • 2.Sxc6#
      • 1...Sc5+
        • 2.Bxc5#
      • 1...Bd6
        • 2.Qc4#
      • 1...Sbd6
        • 2.Qc5#
      • 1...Sb6
        • 2.Qe4#
      • 1...Scd6
        • 2.Qd5#
      • 1...a4
        • 2.Rxa4#

This anticipates 190256(2019)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(e);N_GUARD,XB(B)::R(A)+S(F)
    • Q(e);N_GUARD::R(A)+S(F)
    • R(f);CHECK,XQ(H)::S(I),XR(f)
    • B(d);N_PINQ(H)::QAR1(H)
    • S(g);CHECK,N_GUARD::B(J),XS(g)
    • S(g);N_PINQ(H)::QAB1(H)
    • S(j);N_PINQ(H)::QAR1(H)
  • Tries
    • Try
      • B(J);
      • Threat
        • B(J),XP(a)
      • Vars
        • R(f);CHECK,XQ(H)::S(I),XR(f)
        • S(g);CHECK,N_GUARD::B(J),XS(g)
      • Refutation
        • P(c);XB(J)
  • Actual
    • R(A);
    • Threat
      • R(A)
    • Vars
      • R(f);CHECK,XQ(H)::S(I),XR(f)
      • S(g);CHECK,N_GUARD::B(J),XS(g)
      • B(d);N_PINQ(H)::QAR1(H)
      • S(g);N_PINQ(H)::QAB1(H)
      • S(j);N_PINQ(H)::QAR1(H)
      • P(c);::R(A),XP(c)
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Developed and maintained by Brian Stephenson.
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