MESON Chess Problem Database

Problem Display
PID: 246008 (3B4/1K6/2p5/P7/k7/2Q5/PRnn2P1/q2N1B2 w - - 0 1)

Svitek, Miroslav

Source?, 0000

3B4/1K6/2p5/P7/k7/2Q5/PRnn2P1/q2N1B2

#2

9 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb2+
      • 2.Sxb2#
    • 1...Se1
      • 2.Rb4#
      • 2.Qb4#
    • 1...Sa3
      • 2.Rb4#
      • 2.Qb4#
    • 1...Se3
      • 2.Rb4#
      • 2.Qb4#
    • 1...Sb4
      • 2.Rxb4#
      • 2.Qxb4#
    • 1...Sd4
      • 2.Rb4#
      • 2.Qb4#
    • 1...Sb1
      • 2.Qb3#
    • 1...Sxf1
      • 2.Qb3#
    • 1...Sb3
      • 2.Qxb3#
    • 1...Sf3
      • 2.Qb3#
    • 1...Sc4
      • 2.Qb3#
    • 1...Se4
      • 2.Qb3#
    • 1...c5
      • 2.Bb5#
  • Tries
    • 1.Kxc6?
      • threat
        • 2.Bb5#
      • 1...Sb4+
        • 2.Rxb4#
        • 2.Qxb4#
      • 1...Qxb2
        • 2.Sxb2#
      • 1...Sxf1
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sa3
        • 2.Rb4#
        • 2.Qb4#
      • 1...Sc4
        • 2.Qb3#
      • 1...Sd4+!
    • 1.Qxc2+?
      • 1...Sb3
        • 2.Qxb3#
      • 1...Ka3!
    • 1.Qa3+?
      • 1...Sxa3
        • 2.Sc3#
      • 1...Kxa3!
  • Keys
    • 1.a6!
      • threat
        • 2.Qa5#
      • 1...Qxb2+
        • 2.Sxb2#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sb4
        • 2.Rxb4#
        • 2.Qxb4#
      • 1...Sc4
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 5
  • Sets
    • Q(a);CHECK,XR(D)::S(A),XQ(a)
    • S(c);N_GUARD::QAB1(F)
    • S(c);N_GUARD,XB(B)::QAB1(F)
    • S(c);N_GUARD::QAB1(F),XS(c)
    • P(e);N_GUARD::B(B)
  • Tries
    • Try
      • K(H);S_FLIGHT,XP(e)
      • Threat
        • B(B)
      • Vars
        • Q(a);XR(D)::S(A),XQ(a)
        • S(c);N_GUARD,XB(B)::QAB1(F)
        • S(c);N_GUARD::QAB1(F),XS(c)
        • S(c);N_GUARD::QAB1(F)
      • Refutation
        • S(b);CHECK
    • Try
      • Q(F);CHECK,XS(b)
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(F),XS(c)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • S(b);SBLOCK,XQ(F)::S(A)
      • Refutation
        • K(d);P-FLIGHT,XQ(F)
  • Actual
    • P(G);
    • Threat
      • QAR1(F)
    • Vars
      • Q(a);CHECK,XR(D)::S(A),XQ(a)
      • S(c);N_GUARD::QAB1(F),XS(c)
      • S(c);N_GUARD::QAB1(F)
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