MESON Chess Problem Database

Problem Display
PID: 175985 (8/2n5/8/K2R4/8/Nkp5/8/Q6b w - - 0 1)

Zimmer, Eligiusz

Sachova skladba, 2009

8/2n5/8/K2R4/8/Nkp5/8/Q6b

#2

4 + 4

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sb5
      • 2.Rxb5#
    • 1...Se6
      • 2.Rb5#
    • 1...Sa8
      • 2.Rb5#
    • 1...Se8
      • 2.Rb5#
    • 1...c2
      • 2.Rd3#
  • Tries
    • 1.Rd1?
      • threat
        • 2.Rb1#
      • 1...c2
        • 2.Rd3#
      • 1...Be4!
    • 1.Rd2?
      • threat
        • 2.Qa2#
      • 1...c2
        • 2.Rd3#
      • 1...cxd2!
    • 1.Rc5?
      • threat
        • 2.Rxc3#
      • 1...Sb5
        • 2.Rxb5#
      • 1...c2
        • 2.Rc3#
      • 1...Sd5!
    • 1.Qxc3+?
      • 1...Ka2
        • 2.Rd2#
      • 1...Kxc3!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qa4#
      • 1...Kc2
        • 2.Qd1#
      • 1...Kxc4
        • 2.Qa2#
      • 1...c2
        • 2.Sd2#

Anticipated by 23568(2000)

This anticipates 232923(2010)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(d);N_GUARD::R(D),XS(d)
    • S(d);N_GUARD::R(D)
    • P(c);OGATEB::R(D)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(D)
      • Vars
        • P(c);OGATEB::R(D)
      • Refutation
        • B(a);
    • Try
      • R(D);
      • Threat
        • QAB1(A)
      • Vars
        • P(c);OGATEB::R(D)
      • Refutation
        • P(c);XR(D)
    • Try
      • R(D);
      • Threat
        • R1(D),XP(c)
      • Vars
        • S(d);N_GUARD::R(D),XS(d)
        • P(c);::R1(D)
      • Refutation
        • S(d);
    • Try
      • Q(A);CHECK,XP(c)
      • Vars
        • K(b);S_FLIGHT::R(D)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • S(B);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • K(b);S_FLIGHT,XS(B)::QAB(A)
      • P(c);N_GUARD,SBLOCK::S(B)
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