MESON Chess Problem Database

Problem Display
PID: 264909 (2q1R3/4npQ1/2Npn2B/3p4/3rkP1N/7R/2Pp4/3B2Kb w - - 0 1)

Stojnic, Dragan

1st HM., Astafyeva-30 JT (Kudesnik), 2021

2q1R3/4npQ1/2Npn2B/3p4/3rkP1N/7R/2Pp4/3B2Kb

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.cxd3#
    • 1...Bg2
      • 2.Qxg2#
    • 1...Sxf4
      • 2.Qxd4#
    • 1...Sc5
      • 2.Qxd4#
    • 1...Sg5
      • 2.Qxd4#
    • 1...Sc7
      • 2.Qxd4#
    • 1...Sd8
      • 2.Qxd4#
    • 1...Sf8
      • 2.Qxd4#
    • 1...Sg6
      • 2.Qxd4#
    • 1...Sg8
      • 2.Qxd4#
  • Tries
    • 1.Kxh1?
      • threat
        • 2.Qg2#
      • 1...Sxf4
        • 2.Qxd4#
      • 1...Sg5
        • 2.Qxd4#
      • 1...Rd3
        • 2.cxd3#
      • 1...Sg6
        • 2.Qxd4#
      • 1...Sxg7!
    • 1.Kf2?
      • threat
        • 2.Re3#
      • 1...Sg5
        • 2.Qxd4#
      • 1...Rd3
        • 2.cxd3#
      • 1...Bf3
        • 2.Bxf3#
      • 1...Sf5!
    • 1.Qg3?
      • threat
        • 2.Qe3#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Rd3
        • 2.Qxd3#
        • 2.cxd3#
      • 1...Sf5!
    • 1.Qg4?
      • threat
        • 2.Qe2#
      • 1...Sxf4
        • 2.Qxf4#
      • 1...Bf3
        • 2.Qxf3#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Rd3
        • 2.cxd3#
      • 1...Sg5
        • 2.f5#
      • 1...Qa6!
  • Keys
    • 1.f5!
      • threat
        • 2.Re3#
      • 1...Sxf5
        • 2.Qg4#
      • 1...Sg5
        • 2.Qxd4#
      • 1...Rd3
        • 2.cxd3#
      • 1...Bf3
        • 2.Bxf3#
      • 1...Sf4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • R(c);OGATE::P(C),XR(c)
    • B(a);N_GUARD::QAB(I),XB(a)
    • S(g);N_GUARD,P_SPINS(h),XP(E)::QAR1(I),XR(c)
    • S(g);N_GUARD,P_SPINS(h)::QAR1(I),XR(c)
    • S(h);P_SPINS(g)::QAR1(I),XR(c)
  • Tries
    • Try
      • K(B);P-FLIGHT,XB(a)
      • Threat
        • QAB(I)
      • Vars
        • S(g);N_GUARD,P_SPINS(h),XP(E)::QAR1(I),XR(c)
        • S(g);N_GUARD,P_SPINS(h)::QAR1(I),XR(c)
        • R(c);OGATE::P(C),XR(c)
        • S(h);P_SPINS(g)::QAR1(I),XR(c)
      • Refutation
        • S(g);P_SPINS(h),XQ(I)
    • Try
      • K(B);S_FLIGHT
      • Threat
        • R1(D)
      • Vars
        • S(g);N_GUARD,P_SPINS(h)::QAR1(I),XR(c)
        • R(c);OGATE::P(C),XR(c)
        • B(a);N_GUARD::B(A),XB(a)
      • Refutation
        • S(h);P_SPINS(g)
    • Try
      • Q(I);
      • Threat
        • QAR1(I)
      • Vars
        • B(a);N_GUARD::QAB1(I),XB(a)
      • Refutation
        • S(h);P_SPINS(g)
    • Try
      • Q(I);
      • Threat
        • QAR2(I)
      • Vars
        • S(g);OGATE,P_SPINS(g),XP(E)::QAR1(I),XS(g)
        • B(a);N_GUARD::QAB1(I),XB(a)
        • S(h);N_GUARD,P_SPINS(g)::QAB1(I),XS(h)
        • R(c);OGATE::P(C),XR(c)
        • S(g);N_GUARD,P_SPINS(h)::QAR(I)+P(E)
      • Refutation
        • Q(j);
  • Actual
    • P(E);
    • Threat
      • R1(D)
    • Vars
      • S(h);P_SPINS(g),XP(E)::QAR2(I)
      • S(g);N_GUARD,P_SPINS(h)::QAR1(I),XR(c)
      • R(c);OGATE::P(C),XR(c)
      • B(a);N_GUARD::B(A),XB(a)
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