MESON Chess Problem Database

Problem Display
PID: 252970 (6b1/8/5B2/K1p4B/1pk5/3R4/2pPQn2/4b3 w - - 0 1)

Labai, Zoltan

StrateGems, 2021

6b1/8/5B2/K1p4B/1pk5/3R4/2pPQn2/4b3

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.Rc3#
    • 1...Bf7
      • 2.Bxf7#
    • 1...Bh7
      • 2.Bf7#
    • 1...Sd1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Sh3
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sg4
      • 2.Qe4#
    • 1...b3
      • 2.Rd4#
  • Tries
    • 1.Ka4?
      • threat
        • 2.Rd4#
      • 1...Sxd3
        • 2.Qe4#
      • 1...Bxd2!
    • 1.Bf3?
      • threat
        • 2.Rc3#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sxd3!
    • 1.Ra3+?
      • 1...Sd3
        • 2.Qxd3#
        • 2.Qe4#
      • 1...Kd5!
    • 1.Re3+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Rf3+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Rg3+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Rh3+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kd5!
    • 1.Rd6+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kb3!
    • 1.Rd7+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kb3!
    • 1.Rd8+?
      • 1...Sd3
        • 2.Qxd3#
      • 1...Kb3!
    • 1.Qg4+?
      • 1...Kxd3
        • 2.Qe2#
      • 1...Se4
        • 2.Qxe4#
      • 1...Sxg4!
    • 1.Qe6+?
      • 1...Kxd3
        • 2.Qe2#
      • 1...Bxe6!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qb5#
      • 1...Kxd3
        • 2.Qe2#
      • 1...Sxd3
        • 2.Qxg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • B(g);SBLOCK::QAB(B)+R(C),DCHECK
    • B(g);N_GUARD::B(E),XB(g)
    • B(g);N_GUARD::B(E)
    • S(c);N_GUARD::QAR2(B)
    • S(c);N_GUARD::QAR2(B),XS(c)
    • P(d);P_PINP(A),SBLOCK::QAB(B)+R(C),DCHECK
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB(B)+R(C),DCHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c),XR(C)::QAR2(B)
      • Refutation
        • B(a);XP(A)
    • Try
      • B(E);
      • Threat
        • QAB(B)+R(C),DCHECK
      • Vars
        • S(c);N_GUARD::QAR2(B),XS(c)
      • Refutation
        • S(c);P_SPINS(c),XR(C)
    • Try
      • R(C);CHECK
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(B),XS(c)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);OGATEB,S_FLIGHT,XR(C)::QAB1(B)
        • S(c);N_GUARD,P_SPINS(c)::QAR2(B),XS(c)
      • Refutation
        • S(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);OGATEB,S_FLIGHT,XR(C)::QAB1(B)
      • Refutation
        • B(g);XQ(B)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • K(e);OGATEB,S_FLIGHT,XR(C)::QAB1(B)
      • S(c);SBLOCK,XR(C)::QAB(B),XB(g)
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