MESON Chess Problem Database

Problem Display
PID: 263118 (8/3p1B2/1KNpq1p1/ppNkp3/2p5/3P2Q1/8/7b w - - 0 1)

Mlynka, Karol

3rd Prize, SuperProblem, 2021

8/3p1B2/1KNpq1p1/ppNkp3/2p5/3P2Q1/8/7b

#2

6 + 10

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.dxe4#
    • 1...cxd3
      • 2.Qxd3#
    • 1...e4
      • 2.Qg5#
    • 1...dxc5
      • 2.Qxe5#
  • Tries
    • 1.Sa6?
      • threat
        • 2.Sc7#
      • 1...cxd3
        • 2.Qxd3#
      • 1...dxc6!
    • 1.Sxd7?
      • threat
        • 2.Sf6#
      • 1...cxd3
        • 2.Qxd3#
      • 1...Qxf7!
    • 1.Qf4?
      • threat
        • 2.Se7#
      • 1...Qxf7
        • 2.Qxf7#
      • 1...dxc5
        • 2.Qxe5#
      • 1...dxc6
        • 2.Bxe6#
      • 1...Be4
        • 2.Qxe4#
        • 2.dxe4#
      • 1...e4
        • 2.Qg5#
      • 1...exf4!
    • 1.Qg2+?
      • 1...e4
        • 2.Qg5#
        • 2.dxe4#
      • 1...Bxg2!
    • 1.Qe3?
      • threat
        • 2.Se7#
      • 1...cxd3
        • 2.Qxd3#
      • 1...dxc5
        • 2.Qxc5#
        • 2.Qxe5#
      • 1...dxc6
        • 2.Bxe6#
      • 1...e4
        • 2.Qd4#
        • 2.Qg5#
      • 1...Qxf7!
    • 1.Qf3+?
      • 1...e4
        • 2.dxe4#
      • 1...Bxf3!
    • 1.dxc4+?
      • 1...Kxc4
        • 2.Qb3#
        • 2.Qd3#
      • 1...bxc4!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Se7#
      • 1...Qxf7
        • 2.Qxf7#
      • 1...cxd3
        • 2.Qa2#
      • 1...dxc5
        • 2.Qxc5#
      • 1...dxc6
        • 2.Bxe6#
      • 1...e4
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • B(a);OGATE::P(A),XB(a)
    • P(b);OGATE,XP(A)::QAR2(B),XP(b)
    • P(f);OGATEB::QAR(B)
    • P(g);N_GUARD,P_PINS(E),XS(C)::QAR1(B),XP(f)
  • Tries
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • P(b);OGATE,XP(A)::QAR2(B),XP(b)
      • Refutation
        • P(j);XS(E)
    • Try
      • S(C);XP(j)
      • Threat
        • S(C)
      • Vars
        • P(b);OGATE,XP(A)::QAR2(B),XP(b)
      • Refutation
        • Q(h);N_SPINQ(h),XB(F)
    • Try
      • Q(B);
      • Threat
        • S(E)
      • Vars
        • Q(h);N_SPINQ(h),OGATE,XB(F)::QAB(B),XQ(h)
        • P(g);N_GUARD,P_PINS(E),XS(C)::QAR1(B),XP(f)
        • P(j);N_GUARD,XS(E)::B(F),XQ(h)
        • P(f);OGATEB::QAR(B)
      • Refutation
        • P(f);XQ(B)
    • Try
      • Q(B);CHECK
      • Refutation
        • B(a);XQ(B)
    • Try
      • Q(B);
      • Threat
        • S(E)
      • Vars
        • P(b);OGATE,XP(A)::QAR2(B),XP(b)
        • P(j);N_GUARD,XS(E)::B(F),XQ(h)
      • Refutation
        • Q(h);N_SPINQ(h),XB(F)
    • Try
      • Q(B);CHECK
      • Vars
        • P(f);OGATE,P_SPINP(f)::P(A),XP(f)
      • Refutation
        • B(a);XQ(B)
    • Try
      • P(A);CHECK,XP(b)
      • Refutation
        • P(d);XP(A)
  • Actual
    • Q(B);
    • Threat
      • S(E)
    • Vars
      • Q(h);N_SPINQ(h),OGATE,XB(F)::QAB(B),XQ(h)
      • P(b);OGATEB,XP(A)::QAB(B)
      • P(g);OGATE,P_PINS(E),XS(C)::QAR1(B),XP(g)
      • P(j);N_GUARD,XS(E)::B(F),XQ(h)
      • P(f);N_GUARD::QAR1(B)
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