MESON Chess Problem Database

Problem Display
PID: 239006 (2Q1b3/1p1N4/1R2Nrn1/K1p3q1/1BkpP3/R4p2/1P6/6b1 w - - 0 1)

Petite, Efren

Problemas, 2014

2Q1b3/1p1N4/1R2Nrn1/K1p3q1/1BkpP3/R4p2/1P6/6b1

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Qxc5#
    • 1...Qd2
      • 2.Qxc5#
    • 1...Qe3
      • 2.Qxc5#
    • 1...Qf4
      • 2.Qxc5#
    • 1...Qh4
      • 2.Qxc5#
    • 1...Qh6
      • 2.Qxc5#
    • 1...Qg2
      • 2.Qxc5#
    • 1...Qg3
      • 2.Qxc5#
    • 1...Qg4
      • 2.Qxc5#
    • 1...Se5
      • 2.Qxc5#
    • 1...d3
      • 2.Rc3#
      • 2.b3#
  • Tries
    • 1.Sexc5?
      • threat
        • 2.b3#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Qe3
        • 2.Se6#
      • 1...d3!
    • 1.Sdxc5?
      • threat
        • 2.b3#
      • 1...Qxc5+
        • 2.Qxc5#
      • 1...Qe3
        • 2.Sd7#
      • 1...Ba4!
    • 1.Se5+?
      • 1...Sxe5
        • 2.Qxc5#
      • 1...Qxe5!
    • 1.Rc6?
      • threat
        • 2.Sb6#
      • 1...b6+
        • 2.Sxb6#
      • 1...Bxd7!
    • 1.Rd6?
      • threat
        • 2.Sb6#
      • 1...b6+
        • 2.Sxb6#
      • 1...Bxd7!
  • Keys
    • 1.Bxc5!
      • threat
        • 2.Rb4#
      • 1...Qd2+
        • 2.Bb4#
      • 1...Qxc5+
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(f);N_GUARD::QAR1(I),XP(e)
    • Q(f);N_GUARD,P_PINB(C)::QAR1(I),XP(e)
    • S(h);S_CUTQ(f)::QAR1(I),XP(e)
  • Tries
    • Try
      • S(G);P_SPINS(G),XP(e)
      • Threat
        • P(A)
      • Vars
        • Q(f);CHECK,OGATE,P_SPINQ(f),XS(G)::QAR1(I),XQ(f)
        • Q(f);N_PINS(G)::QAR(I)+S(G)
      • Refutation
        • P(d);
    • Try
      • S(H);P_SPINS(H),XP(e)
      • Threat
        • P(A)
      • Vars
        • Q(f);CHECK,OGATE,P_SPINQ(f),XS(H)::QAR1(I),XQ(f)
        • Q(f);N_PINS(H)::QAR(I)+S(H)
      • Refutation
        • B(j);
    • Try
      • S(H);CHECK
      • Vars
        • S(h);XS(H)::QAR1(I),XP(e)
      • Refutation
        • Q(f);XS(H)
    • Try
      • R(F);
      • Threat
        • S(H)
      • Vars
        • P(i);CHECK::S(H),XP(i)
      • Refutation
        • B(j);XS(H)
    • Try
      • R(F);
      • Threat
        • S(H)
      • Vars
        • P(i);CHECK::S(H),XP(i)
      • Refutation
        • B(j);XS(H)
  • Actual
    • B(C);P_SPINB(C),XP(e)
    • Threat
      • R1(F)
    • Vars
      • Q(f);CHECK,N_PINB(C)::QAR(I)+B(C)
      • Q(f);CHECK,OGATE,P_SPINQ(f),XB(C)::QAR1(I),XQ(f)
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