MESON Chess Problem Database

Problem Display
PID: 237494 (3r2b1/5p2/p7/K4Q2/nPkpPNR1/8/p2P2B1/2N5 w - - 0 1)

Labai, Zoltan

Zaldo MT (Problemas), 2019

3r2b1/5p2/p7/K4Q2/nPkpPNR1/8/p2P2B1/2N5

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5+
      • 2.Qxd5#
    • 1...Ra8
      • 2.Qd5#
    • 1...Rb8
      • 2.Qd5#
    • 1...Rc8
      • 2.Qd5#
    • 1...Re8
      • 2.Qd5#
    • 1...Rf8
      • 2.Qd5#
    • 1...Sb2
      • 2.Qc5#
    • 1...Sc3
      • 2.Qc5#
      • 2.d3#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Sb6
      • 2.Qc5#
  • Tries
    • 1.Sfe2?
      • threat
        • 2.d3#
      • 1...Rd5+
        • 2.Qxd5#
      • 1...Sb2
        • 2.Qc5#
      • 1...Sc5
        • 2.Qxc5#
      • 1...d3!
    • 1.Sfd3?
      • threat
        • 2.Se5#
      • 1...Rd5+
        • 2.Qxd5#
      • 1...Re8
        • 2.Qd5#
      • 1...f6!
    • 1.Qe6+?
      • 1...Rd5+
        • 2.Qxd5#
      • 1...fxe6!
    • 1.Qc8+?
      • 1...Sc5
        • 2.Qxc5#
      • 1...Rxc8!
    • 1.e5?
      • threat
        • 2.Qd3#
      • 1...Rd5+
        • 2.Bxd5#
      • 1...d3
        • 2.Sd5#
      • 1...Sb2
        • 2.Qc2#
      • 1...Sc5
        • 2.Qc2#
      • 1...Bh7!
  • Keys
    • 1.Sd5!
      • threat
        • 2.d3#
      • 1...Rxd5+
        • 2.Qxd5#
      • 1...d3
        • 2.e5#
      • 1...Sb2
        • 2.Sb6#
      • 1...Sc5
        • 2.Sb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • R(g);CHECK,N_GUARD::QAB1(I),XR(g)
    • R(g);N_GUARD::QAB1(I)
    • S(b);N_GUARD::QAR1(I)
    • S(b);N_GUARD::QAR1(I),XS(b)
  • Tries
    • Try
      • S(F);
      • Threat
        • P(B)
      • Vars
        • R(g);CHECK,N_GUARD::QAB1(I),XR(g)
        • S(b);N_GUARD::QAR1(I)
        • S(b);N_GUARD::QAR1(I),XS(b)
      • Refutation
        • P(d);
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • R(g);CHECK,N_GUARD::QAB1(I),XR(g)
        • R(g);N_GUARD::QAB1(I)
      • Refutation
        • P(f);
    • Try
      • Q(I);CHECK
      • Vars
        • R(g);CHECK,N_GUARD,P_SPINR(g)::QAB1(I),XR(g)
      • Refutation
        • P(f);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(I),XS(b)
      • Refutation
        • R(g);XQ(I)
    • Try
      • P(E);
      • Threat
        • QAB1(I)
      • Vars
        • R(g);CHECK,N_GUARD::B(C),XR(g)
        • P(d);::R(G)+S(F)
        • S(b);N_GUARD::QAR2(I)
      • Refutation
        • B(h);
  • Actual
    • S(F);
    • Threat
      • P(B)
    • Vars
      • R(g);CHECK,OGATE,XS(F)::QAB1(I),XR(g)
      • P(d);::R(G)+P(E)
      • S(b);N_GUARD::S(F)
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