MESON Chess Problem Database

Problem Display
PID: 237281 (4rRQ1/1r2pb2/1pR5/1B1k4/2N1p3/2K5/8/5n2 w - - 0 1)

Barnes, Barry Peter

Coello-75 JT (Problemas), 2017

4rRQ1/1r2pb2/1pR5/1B1k4/2N1p3/2K5/8/5n2

#2

6 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Rf5#
      • 2.Qxe6#
    • 1...e3
      • 2.Qg2#
  • Tries
    • 1.Se3+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Sxe3!
    • 1.Sxb6+?
      • 1...Ke5
        • 2.Qg5#
      • 1...Rxb6!
    • 1.Rxf7?
      • threat
        • 2.Rf5#
      • 1...e3
        • 2.Qg2#
      • 1...e5
        • 2.Rd7#
      • 1...Rxg8!
    • 1.Qg1?
      • threat
        • 2.Qd4#
      • 1...e3
        • 2.Qh1#
        • 2.Qg2#
      • 1...e5
        • 2.Rd6#
      • 1...Se3!
  • Keys
    • 1.Re6!
      • threat
        • 2.Re5#
      • 1...Kc5
        • 2.Qg5#
      • 1...Kxe6
        • 2.Qxf7#
      • 1...Bxe6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • P(b);OGATEB::QAB(F)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);N_SPINB(g),P-FLIGHT::QAR2(F)
      • Refutation
        • S(a);XS(B)
    • Try
      • S(B);CHECK,XP(d)
      • Vars
        • K(c);N_SPINB(g),P-FLIGHT::QAR2(F)
      • Refutation
        • R(e);XS(B)
    • Try
      • R(E);XB(g)
      • Threat
        • QAB(F)+R(E),DCHECK
      • Vars
        • P(b);OGATEB::QAB(F)
        • P(f);OGATE::QAB(F)+R(E),DCHECK
      • Refutation
        • R(h);XQ(F)
    • Try
      • Q(F);N_PINB(g)
      • Threat
        • QAR1(F)
      • Vars
        • P(f);N_GUARD::R1(D)
      • Refutation
        • S(a);
  • Actual
    • R(D);N_PINB(g)
    • Threat
      • R1(D)
    • Vars
      • K(c);P-FLIGHT::QAR(F)
      • K(c);OGATEB,P_SPINB(g),S_FLIGHT,XR(D)::QAB1(F),XB(g)
      • B(g);OGATE,P_SPINB(g),XR(D)::R(E)
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