MESON Chess Problem Database

Problem Display
PID: 162318 (5K2/2p5/4NR2/b1pkNR2/1pp1pp2/2p1qr2/5Q2/6B1 w - - 0 1)

Barnes, Barry Peter

Comm., The Problemist, 2016

5K2/2p5/4NR2/b1pkNR2/1pp1pp2/2p1qr2/5Q2/6B1

#2

7 + 11

56 The Problemist 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sxf4#
    • 1...Qc1
      • 2.Qxc5#
    • 1...Qd2
      • 2.Qxc5#
    • 1...Qe1
      • 2.Qxc5#
    • 1...Qe2
      • 2.Qxc5#
    • 1...Qd3
      • 2.Qxc5#
    • 1...c6
      • 2.Sf7#
  • Tries
    • 1.Sd3+?
      • 1...Kd6
        • 2.Sexc5#
      • 1...Kc6!
    • 1.Sxf3+?
      • 1...Kd6
        • 2.Sxc5#
      • 1...Kc6!
    • 1.Sg4+?
      • 1...Kd6
        • 2.Sxc5#
      • 1...Kc6!
    • 1.Sc6+?
      • 1...Kd6
        • 2.Sxc5#
      • 1...Kxc6!
    • 1.Sg6+?
      • 1...Kd6
        • 2.Sxc5#
      • 1...Kc6!
    • 1.Sd7+?
      • 1...Kd6
        • 2.Sexc5#
      • 1...Kc6!
    • 1.Sxf4+?
      • 1...Kd4
        • 2.Sc6#
      • 1...Qxf4
        • 2.Qxc5#
      • 1...Rxf4!
    • 1.Sxc7+?
      • 1...Kd4
        • 2.Rd6#
      • 1...Bxc7!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Sxf3#
        • 2.Sc6#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Kd4
        • 2.Sc6#
      • 1...Kxc5
        • 2.Sxf3#
      • 1...Rxf2
        • 2.Sf3#
        • 2.Sc6#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Rg3
        • 2.Sf3#
        • 2.Sc6#
      • 1...Rh3
        • 2.Sf3#
        • 2.Sc6#
      • 1...c6
        • 2.Sxf3#
        • 2.Sxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • K(j);P-FLIGHT::R(F)+S(E),XP(g)
    • Q(b);OGATE::QAR1(B),XP(i)
    • P(k);SBLOCK::R(D)+S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(j);P-FLIGHT::R(F)+S(E),XP(i)
      • Refutation
        • K(j);S_FLIGHT
    • Try
      • S(C);CHECK,XR(c)
      • Vars
        • K(j);P-FLIGHT::R(F)+S(E),XP(i)
      • Refutation
        • K(j);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(j);P-FLIGHT::R(F)+S(E),XP(i)
      • Refutation
        • K(j);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(j);P-FLIGHT::R(F)+S(E),XP(i)
      • Refutation
        • K(j);S_FLIGHT,XS(C)
    • Try
      • S(C);CHECK
      • Vars
        • K(j);P-FLIGHT::R(F)+S(E),XP(i)
      • Refutation
        • K(j);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(j);P-FLIGHT::R(F)+S(E),XP(i)
      • Refutation
        • K(j);S_FLIGHT
    • Try
      • S(E);CHECK,XP(g)
      • Vars
        • K(j);P-FLIGHT,P_SPINQ(b)::S(C)
        • Q(b);OGATE,XS(E)::QAR1(B),XP(i)
      • Refutation
        • R(c);XS(E)
    • Try
      • S(E);CHECK,XP(k)
      • Vars
        • K(j);P-FLIGHT,P_SPINQ(b)::R(F)
      • Refutation
        • B(h);XS(E)
  • Actual
    • S(E);XP(i)
    • Threat
      • DUALS(2)
    • Vars
      • Q(b);CHECK,OGATE,XS(E)::QAR1(B),XQ(b)
      • K(j);P-FLIGHT,P_SPINQ(b)::S(C)
      • K(j);P-FLIGHT,P_SPINQ(b),XS(E)::R(D)+S(C),XR(c)
      • Q(b);OGATE::QAR1(B),XQ(b)
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