MESON Chess Problem Database

Problem Display
PID: 227935 (8/1Q4K1/1P1p4/2N5/P1kp2R1/Ppb5/4PB2/2Rr1q2 w - - 0 1)

Fastosky, Pedro

El Ajedrez Argentino, 1956

8/1Q4K1/1P1p4/2N5/P1kp2R1/Ppb5/4PB2/2Rr1q2

#2

10 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Rxc3#
    • 1...dxc5
      • 2.Qf7#
  • Tries
    • 1.Rxd4+?
      • 1...Kxc5
        • 2.Rxc3#
        • 2.Qc7#
      • 1...Rxd4!
    • 1.Rg5?
      • threat
        • 2.Qd5#
        • 2.Qa6#
      • 1...d5
        • 2.Qxd5#
      • 1...Qg2
        • 2.Qa6#
      • 1...Qh1
        • 2.Qa6#
      • 1...d3+!
    • 1.Qa6+?
      • 1...Kxc5
        • 2.Qb5#
      • 1...Kd5!
  • Keys
    • 1.e4!
      • threat
        • 2.Qd5#
      • 1...d3+
        • 2.e5#
      • 1...Kxc5
        • 2.Qc7#
      • 1...dxc5
        • 2.Qa6#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);P-FLIGHT,XS(G)::R(A),XB(d)
    • P(g);N_GUARD,SBLOCK,XS(G)::QAB(I)
  • Tries
    • Try
      • R(F);CHECK,P_SPINR(F),XP(f)
      • Refutation
        • R(a);XR(F)
    • Try
      • R(F);N_PINP(f)
      • Threat
        • DUALS(2)
      • Vars
        • P(g);::QAB1(I),XP(g)
        • Q(b);P_PINR(F)::QAB(I)
        • Q(b);::QAB(I)
      • Refutation
        • P(f);CHECK
    • Try
      • Q(I);CHECK
      • Vars
        • K(e);P-FLIGHT,XS(G)::QAR1(I)
      • Refutation
        • K(e);N_SPINB(d),N_SPINP(f),S_FLIGHT
  • Actual
    • P(B);N_PINP(f)
    • Threat
      • QAB1(I)
    • Vars
      • P(f);CHECK::R(F)+P(B)
      • K(e);OGATEB,P-FLIGHT,P_SPINP(f),XS(G)::QAR2(I)
      • P(g);SBLOCK,XS(G)::QAB(I)
      • P(g);::QAB1(I),XP(g)
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