MESON Chess Problem Database

Problem Display
PID: 152809 (6B1/3pBrp1/2pPN2n/1p2kp1R/4P1P1/3PN3/Q7/K3R3 w - - 0 1)

Guida, Marco

StrateGems, 2011

6B1/3pBrp1/2pPN2n/1p2kp1R/4P1P1/3PN3/Q7/K3R3

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Qb2#
      • 2.Qh2#
    • 1...Rf8
      • 2.Qb2#
      • 2.Qh2#
    • 1...Sxg4
      • 2.Sxg4#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Sg2?
      • threat
        • 2.d4#
        • 2.exf5#
      • 1...Sxg4
        • 2.d4#
      • 1...dxe6
        • 2.Qb2#
      • 1...c5
        • 2.Qd5#
        • 2.exf5#
      • 1...Rxe7!
    • 1.Sd5?
      • threat
        • 2.exf5#
      • 1...Kxe6
        • 2.exf5#
      • 1...Rxe7
        • 2.Qh2#
      • 1...dxe6
        • 2.Qb2#
      • 1...Sxg4!
    • 1.Bxf7?
      • threat
        • 2.Qb2#
        • 2.Qh2#
      • 1...Sxg4
        • 2.Sxg4#
        • 2.Rxf5#
        • 2.Qb2#
      • 1...Sxf7
        • 2.Rxf5#
      • 1...g5
        • 2.Qb2#
      • 1...dxe6!
    • 1.Rxf5+?
      • 1...Rxf5
        • 2.Qb2#
      • 1...Sxf5!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.d4#
      • 1...Rxe7
        • 2.Qb2#
      • 1...dxe6
        • 2.Qh2#
      • 1...c5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • S(e);XP(G)::S(E),XS(e)
    • P(d);N_GUARD::QAR1(C)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(e);XP(G)::P(D)
        • P(f);SBLOCK,XS(J)::QAB(C)
      • Refutation
        • R(g);XB(K)
    • Try
      • S(E);
      • Threat
        • R(B)+P(F),XP(c)
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT,P_SPINR(g),XS(J)::R(B)+P(F)DCHECK,XP(c)
        • R(g);XB(K)::QAB(C)
        • P(f);SBLOCK,XS(J)::QAB(C)
      • Refutation
        • S(e);XP(G)
    • Try
      • B(L);XR(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);N_GUARD,XB(L)::R1(H),XP(c)
        • P(h);N_SPINP(c)::QAB(C)
      • Refutation
        • P(f);XS(J)
    • Try
      • R(H);CHECK,XP(c)
      • Vars
        • R(g);XR(H)::QAB(C)
      • Refutation
        • S(e);XR(H)
  • Actual
    • S(E);XP(c)
    • Threat
      • P(D)
    • Vars
      • R(g);XB(K)::QAB(C)
      • P(f);SBLOCK,XS(J)::QAB(C)
      • P(d);N_GUARD::QAR1(C)
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