MESON Chess Problem Database

Problem Display
PID: 263299 (8/1p1QPr2/7p/3bN3/1Kp1kNpR/3p2P1/1B1P4/3Brq2 w - - 0 1)

Zalewski, Mieczyzlaw

3rd Comm., Szachy, 1971

8/1p1QPr2/7p/3bN3/1Kp1kNpR/3p2P1/1B1P4/3Brq2

#2

10 + 10

5454 Near Snap 2022
6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Qxd5#
  • Tries
    • 1.Sexd3?
      • threat
        • 2.Sc5#
        • 2.Qxd5#
      • 1...Qxf4
        • 2.Sc5#
      • 1...Rxd1
        • 2.Qxd5#
      • 1...Rxf4
        • 2.Sc5#
      • 1...cxd3
        • 2.Qxd5#
      • 1...Qe2
        • 2.Qxd5#
      • 1...Re2
        • 2.Qxd5#
      • 1...Be6
        • 2.Qxe6#
      • 1...c3
        • 2.Qxd5#
      • 1...Qg1
        • 2.Qxd5#
      • 1...Qf2
        • 2.Sxf2#
        • 2.Qxd5#
      • 1...Rf5
        • 2.Sc5#
      • 1...Bc6
        • 2.Sc5#
        • 2.Qe6#
      • 1...b6
        • 2.Qxd5#
      • 1...Qxd3!
    • 1.Sxg4?
      • threat
        • 2.Qxd5#
      • 1...Qxf4
        • 2.Sf2#
      • 1...Rxf4
        • 2.Sf6#
      • 1...Be6
        • 2.Qxe6#
      • 1...Bc6
        • 2.Qe6#
      • 1...Rf5!
  • Keys
    • 1.Bxg4!
      • threat
        • 2.Qxd5#
      • 1...Qxf4
        • 2.Bf3#
      • 1...Rxf4
        • 2.Bf5#
      • 1...Bc6
        • 2.Qd4#
      • 1...Be6
        • 2.Qd4#

This anticipates 140626(2010)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(j);SBLOCK::QAB1(I),XB(g)
  • Tries
    • Try
      • S(H);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);XS(F)::S(H)
        • R(a);XB(A)::QAB1(I),XB(g)
        • R(j);XS(F)::S(H)
        • P(d);XS(H)::QAB1(I),XB(g)
        • Q(b);::QAB1(I),XB(g)
        • R(a);::QAB1(I),XB(g)
        • B(g);N_GUARD::QAR2(I),XB(g)
        • P(d);::QAB1(I),XB(g)
        • R(j);::S(H)
        • P(i);::QAB1(I),XB(g)
      • Refutation
        • Q(b);XS(H)
    • Try
      • S(H);XP(f)
      • Threat
        • QAB1(I),XB(g)
      • Vars
        • Q(b);N_GUARD,XS(F)::S(H)
        • R(j);N_GUARD,XS(F)::S(H)
        • B(g);N_GUARD::QAR2(I),XB(g)
        • B(g);N_GUARD::QAR2(I)
      • Refutation
        • R(j);
  • Actual
    • B(A);XP(f)
    • Threat
      • QAB1(I),XB(g)
    • Vars
      • Q(b);N_GUARD,XS(F)::B(A)
      • R(j);N_GUARD,XS(F)::B(A)
      • B(g);OGATE::QAR1(I)
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