MESON Chess Problem Database

Problem Display
PID: 263126 (6KB/1Qp2p2/4n3/4r1N1/N1Pk1n2/2pp1R2/B1p5/4q3 w - - 0 1)

Ersek, Tibor

3rd HM., SuperProblem, 2020

6KB/1Qp2p2/4n3/4r1N1/N1Pk1n2/2pp1R2/B1p5/4q3

#2

8 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qd2
      • 2.Qe4#
    • 1...Qf2
      • 2.Qe4#
    • 1...Qg3
      • 2.Qe4#
    • 1...Qh4
      • 2.Qe4#
    • 1...Qa1
      • 2.Qe4#
    • 1...Qb1
      • 2.Qe4#
    • 1...Qc1
      • 2.Qe4#
    • 1...Qd1
      • 2.Qe4#
    • 1...Qf1
      • 2.Qe4#
    • 1...Qg1
      • 2.Qe4#
    • 1...Qh1
      • 2.Qe4#
    • 1...Qe4
      • 2.Qxe4#
    • 1...Se2
      • 2.Qe4#
      • 2.Qd5#
    • 1...Sg2
      • 2.Qd5#
    • 1...Sh3
      • 2.Qd5#
    • 1...Sd5
      • 2.Qxd5#
    • 1...Sh5
      • 2.Qd5#
    • 1...Sg6
      • 2.Qd5#
  • Tries
    • 1.Sxe6+?
      • 1...Sxe6
        • 2.Qd5#
      • 1...fxe6!
    • 1.Qb4?
      • threat
        • 2.c5#
      • 1...Qb1
        • 2.Qxc3#
      • 1...Sd5
        • 2.cxd5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...c5!
    • 1.Qa7+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...c5!
  • Keys
    • 1.c5!
      • threat
        • 2.Qb4#
      • 1...Qb1
        • 2.Qe4#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 15
  • Sets
    • Q(a);N_GUARD::QAR1(F)
    • Q(a);N_GUARD,P_PINS(E)::QAR1(F)
    • Q(a);N_GUARD::QAR1(F),XQ(a)
    • S(f);N_GUARD::QAR1(F)
    • S(f);N_GUARD::QAR1(F),XS(f)
  • Tries
    • Try
      • S(E);CHECK,XS(h)
      • Vars
        • S(f);XS(E)::QAR1(F)
      • Refutation
        • P(j);XS(E)
    • Try
      • Q(F);
      • Threat
        • QAR(F)+P(D)
      • Vars
        • Q(a);N_GUARD::QAB1(F),XP(c)
        • S(f);OGATE::QAR(F)+P(D),XS(f)
        • S(h);N_GUARD::QAB1(F),XS(h)
      • Refutation
        • P(i);
    • Try
      • Q(F);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAB1(F),XS(h)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • P(D);
    • Threat
      • QAR2(F)
    • Vars
      • Q(a);N_GUARD::QAR1(F)
      • S(f);N_GUARD::QAR1(F),XS(f)
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