MESON Chess Problem Database

Problem Display
PID: 158528 (6n1/4p3/3P1p2/2pP1R2/1pN1k1P1/1N1bp3/1KPR1p1B/Q3nr2 w - - 0 1)

Handloser, Ralf Chris

The Problemist, 2015

6n1/4p3/3P1p2/2pP1R2/1pN1k1P1/1N1bp3/1KPR1p1B/Q3nr2

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Sxc5#
      • 2.Rf4#
    • 1...Be2
      • 2.Sxc5#
      • 2.Rf4#
    • 1...Bxc4
      • 2.Sxc5#
    • 1...Sg2
      • 2.cxd3#
    • 1...Sf3
      • 2.cxd3#
    • 1...exd6
      • 2.Sxd6#
  • Tries
    • 1.Ka2?
      • threat
        • 2.Sxc5#
      • 1...Bxc4
        • 2.Rf4#
      • 1...exd6
        • 2.Sxd6#
      • 1...e5!
    • 1.Rxd3?
      • threat
        • 2.Sxc5#
        • 2.Rxe3#
        • 2.Rf4#
      • 1...Sxc2
        • 2.Sxc5#
      • 1...exd6
        • 2.Sxd6#
        • 2.Rxe3#
        • 2.Rf4#
      • 1...Sg2
        • 2.Sxc5#
      • 1...e2
        • 2.Sbd2#
        • 2.Sxc5#
        • 2.Scd2#
        • 2.Re3#
        • 2.Rf4#
      • 1...e5
        • 2.Sxc5#
      • 1...Sxd3+!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Rf4#
      • 1...Bxc4
        • 2.Sxc5#
      • 1...Sg2
        • 2.cxd3#
      • 1...e5
        • 2.dxe5 ep#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(d);XS(G)::S(F),XP(h)
    • S(a);N_GUARD::P(C),XB(d)
    • P(j);XP(K)::S(G),XP(j)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • S(F),XP(h)
      • Vars
        • B(d);P_PINS(F),XS(G)::R1(J)
        • P(j);XP(K)::S(G),XP(j)
      • Refutation
        • P(j);
    • Try
      • R(D);XB(d)
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XP(C)::S(F),XP(h)
        • S(a);::S(F),XP(h)
        • P(j);::S(F),XP(h)
      • Refutation
        • S(a);CHECK,XR(D)
  • Actual
    • Q(A);
    • Threat
      • R1(J)
    • Vars
      • B(d);XS(G)::S(F),XP(h)
      • S(a);N_GUARD::P(C),XB(d)
      • P(j);OGATE::QAB(A)+P(I),XP(j),EP
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