MESON Chess Problem Database

Problem Display
PID: 198340 (2N1R3/6n1/2p5/3k2P1/3q3Q/KP6/2PRn1P1/8 w - - 0 1)

Grabowski, Kazimierz

Tidskrift for Schack, 1920

2N1R3/6n1/2p5/3k2P1/3q3Q/KP6/2PRn1P1/8

#2

9 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd2
      • 2.Qc4#
    • 1...Qd3
      • 2.Qc4#
    • 1...Sc1
      • 2.Qxd4#
    • 1...Sg1
      • 2.Qxd4#
    • 1...Sc3
      • 2.Qxd4#
    • 1...Sg3
      • 2.Qxd4#
    • 1...c5
      • 2.Qe4#
  • Tries
    • 1.Rxd4+?
      • 1...Kc5
        • 2.Re5#
      • 1...Sxd4!
  • Keys
    • 1.Qf2!
      • 1...Kc5
        • 2.Re5#
      • 1...Qxd2
        • 2.c4#
      • 1...Sxe8
        • 2.Qf5#
      • 1...Se6
        • 2.Qf5#
      • 1...Qd3
        • 2.c4#
      • 1...Sc1
        • 2.Qxd4#
      • 1...Sg1
        • 2.Qxd4#
      • 1...Sc3
        • 2.Qxd4#
      • 1...Sg3
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qxd4#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Sh5
        • 2.Qf5#
      • 1...c5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(b);N_SPINQ(b),OGATE,XR(B)::QAB1(F)
    • Q(b);OGATE,P_PINP(E)::QAB1(F)
    • S(a);N_GUARD::QAR1(F),XQ(b)
    • P(d);SBLOCK::QAB1(F)
  • Tries
    • Try
      • R(B);CHECK,XQ(b)
      • Vars
        • K(c);P-FLIGHT::R(I)
      • Refutation
        • S(a);XR(B)
  • Actual
    • Q(F);
    • Vars
      • K(c);P-FLIGHT::R(I)
      • Q(b);N_SPINQ(b),XR(B)::P(A)
      • S(e);N_GUARD,XR(I)::QAR2(F)
      • S(e);N_GUARD::QAR2(F)
      • Q(b);P_PINP(E)::P(A)
      • S(a);N_GUARD::QAR1(F),XQ(b)
      • S(e);N_GUARD::QAR2(F),XS(e)
      • P(d);SBLOCK::QAB(F)
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