MESON Chess Problem Database

Problem Display
PID: 252854 (8/8/8/1p5Q/bK1pn1r1/2Bk4/R6n/4R3 w - - 0 1)

Kapros, Jorge Marcelo

Problemas, 2021

8/8/8/1p5Q/bK1pn1r1/2Bk4/R6n/4R3

#2

5 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qe2#
    • 1...Rg3
      • 2.Qe2#
    • 1...Rf4
      • 2.Qe2#
    • 1...Rh4
      • 2.Qe2#
    • 1...Rg5
      • 2.Qe2#
    • 1...Rg6
      • 2.Qe2#
    • 1...Rg7
      • 2.Qe2#
    • 1...Rg8
      • 2.Qe2#
    • 1...Bd1
      • 2.Qxb5#
    • 1...Bc2
      • 2.Qxb5#
    • 1...Sd2
      • 2.Rxd2#
    • 1...Sf2
      • 2.Rd2#
    • 1...Sg3
      • 2.Rd2#
    • 1...Sc5
      • 2.Rd2#
    • 1...Sg5
      • 2.Rd2#
    • 1...Sd6
      • 2.Rd2#
    • 1...Sf6
      • 2.Rd2#
    • 1...dxc3
      • 2.Qd5#
  • Tries
    • 1.Re3+?
      • 1...dxe3
        • 2.Qd5#
      • 1...Kxe3!
    • 1.Qh3+?
      • 1...Sf3
        • 2.Qf1#
        • 2.Qxf3#
      • 1...Sg3
        • 2.Rd2#
      • 1...Rg3!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Rd2#
      • 1...dxc3
        • 2.Qd5#
      • 1...Rg2
        • 2.Qxe4#
      • 1...Bc2
        • 2.Qxb5#
      • 1...Sf1
        • 2.Qxf1#
      • 1...Sf3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 16
  • Sets
    • R(f);OGATE::QAB1(E)
    • B(c);N_GUARD::QAB(E),XP(g)
    • S(e);N_GUARD::R1(B),XS(e)
    • S(e);N_GUARD::R1(B)
    • P(d);OGATEB,XB(C)::QAR2(E)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • P(d);SBLOCK,XR(A)::QAR2(E)
      • Refutation
        • K(b);P-FLIGHT,XR(A)
    • Try
      • Q(E);CHECK
      • Vars
        • S(e);P_SPINS(e)::R1(B)
      • Refutation
        • R(f);P_SPINR(f)
  • Actual
    • Q(E);P_PINS(e)
    • Threat
      • R1(B)
    • Vars
      • P(d);OGATEB,XB(C)::QAR2(E)
      • R(f);N_GUARD::QAB1(E),XS(e)
      • B(c);N_GUARD::QAB(E),XP(g)
      • S(a);N_GUARD::QAB(E),XS(a)
      • S(a);N_GUARD::QAR2(E),XS(a)
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