MESON Chess Problem Database

Problem Display
PID: 250238 (8/1pQK3p/5Pp1/3k3r/3rNR1b/1nB5/1P1R2B1/1n4q1 w - - 0 1)

Krenosz, Ferenc

3rd Prize, Nepszava, 1927

8/1pQK3p/5Pp1/3k3r/3rNR1b/1nB5/1P1R2B1/1n4q1

#2

9 + 10

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf2
      • 2.Sxf2#
    • 1...Qc1
      • 2.Sf2#
      • 2.Sg3#
      • 2.Sg5#
    • 1...Bxf6
      • 2.Sxf6#
    • 1...Sxc3
      • 2.Sxc3#
    • 1...Sa1
      • 2.Qc5#
    • 1...Sc1
      • 2.Qc5#
    • 1...Sxd2
      • 2.Qc5#
    • 1...Sa5
      • 2.Qc5#
    • 1...Sc5+
      • 2.Qxc5#
    • 1...g5
      • 2.Rf5#
  • Tries
    • 1.Bb4?
      • threat
        • 2.Sc3#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Qxg2!
    • 1.Bxd4?
      • threat
        • 2.Sc3#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Qxg2!
    • 1.Ba5?
      • threat
        • 2.Sc3#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Qxg2!
    • 1.Rxd4+?
      • 1...Sxd4
        • 2.Qc5#
      • 1...Qxd4!
    • 1.Qc6+?
      • 1...Ke5+
        • 2.Qd6#
      • 1...bxc6!
    • 1.f7?
      • threat
        • 2.Sf6#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Bf6
        • 2.Sxf6#
      • 1...Qxg2!
  • Keys
    • 1.Qb6!
      • threat
        • 2.Qe6#
      • 1...Kc4+
        • 2.Sd6#
      • 1...Ke5+
        • 2.Qd6#
      • 1...Sc5+
        • 2.Qxc5#
      • 1...Re5
        • 2.Qxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 8
  • Sets
    • Q(b);N_GUARD::B(C)+S(E),XQ(b)
    • B(e);XP(G)::B(C)+S(E),DCHECK,XB(e)
    • S(a);XB(D)::B(C)+S(E),DCHECK,XS(a)
    • S(c);N_GUARD::QAR1(H)
    • S(c);N_GUARD,N_SPINR(d),XR(B)::QAR1(H)
    • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
    • P(h);N_GUARD,S_CUTR(g)::R(F)
  • Tries
    • Try
      • B(D);
      • Threat
        • B(C)+S(E),DCHECK
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
        • S(a);::B(C)+S(E),DCHECK,XS(a)
      • Refutation
        • Q(b);XB(C)
    • Try
      • B(D);XR(d)
      • Threat
        • B(C)+S(E),DCHECK
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
        • S(a);::B(C)+S(E),DCHECK,XS(a)
      • Refutation
        • Q(b);XB(C)
    • Try
      • B(D);
      • Threat
        • B(C)+S(E),DCHECK
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
        • S(a);::B(C)+S(E),DCHECK,XS(a)
      • Refutation
        • Q(b);XB(C)
    • Try
      • R(B);CHECK,XR(d)
      • Vars
        • S(c);XR(B)::QAR1(H)
      • Refutation
        • Q(b);XR(B)
    • Try
      • Q(H);CHECK
      • Vars
        • K(f);CHECK,N_GUARD,P-FLIGHT::QAB1(H)
      • Refutation
        • P(i);XQ(H)
    • Try
      • P(G);
      • Threat
        • B(C)+S(E),DCHECK
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
        • B(e);::B(C)+S(E),DCHECK,XB(e)
      • Refutation
        • Q(b);XB(C)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • K(f);CHECK,N_GUARD,N_SPINR(d),S_CUTQ(b),S_FLIGHT::S(E)
      • K(f);CHECK,N_GUARD,P-FLIGHT::QAB1(H)
      • S(c);CHECK,N_GUARD::QAR1(H),XS(c)
      • R(g);SBLOCK::QAB(H),XS(c)
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