MESON Chess Problem Database

Problem Display
PID: 71449 (2N1R3/B7/2pP4/2PN1p1R/2Pk2p1/1b6/4Q3/4K3 w - - 0 1)

Dalla Rosa, Pedro

Faria, Oswaldo

Il Due Mosse, 1959

2N1R3/B7/2pP4/2PN1p1R/2Pk2p1/1b6/4Q3/4K3

#2

10 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Re4#
      • 2.Qe4#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qd3#
      • 1...Bxc4
        • 2.Qe5#
      • 1...Bc2!
    • 1.Se3?
      • threat
        • 2.Qd2#
      • 1...Kc3
        • 2.Qd2#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...Bc2!
    • 1.Scb6?
      • threat
        • 2.Qe3#
      • 1...Kxc5
        • 2.Sc8#
      • 1...f4!
    • 1.Sce7?
      • threat
        • 2.Sxf5#
        • 2.Sxc6#
      • 1...Bxc4
        • 2.Qe3#
      • 1...Bc2
        • 2.Sxc6#
      • 1...Ba4
        • 2.Sxf5#
      • 1...f4
        • 2.Sf5#
        • 2.Sxc6#
      • 1...cxd5!
    • 1.Qb2+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kxc4!
    • 1.Qe5+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kxc4!
  • Keys
    • 1.Sdb6!
      • threat
        • 2.Qe3#
      • 1...Kc3
        • 2.Qd2#
      • 1...Kxc5
        • 2.Sd5#
      • 1...f4
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • QAR1(B)
      • Vars
        • B(a);SBLOCK,XP(C)::QAB1(B)
      • Refutation
        • B(a);
    • Try
      • S(E);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
        • B(a);OGATE,XP(C)::QAR1(B),XB(a)
      • Refutation
        • B(a);
    • Try
      • S(I);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);S_FLIGHT,XP(D)::B(H)+S(I)
      • Refutation
        • P(d);
    • Try
      • S(I);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);SBLOCK,XP(C)::QAB1(B)
        • B(a);::S(I),XP(e)
        • B(a);::S(I),XP(d)
      • Refutation
        • P(e);XS(E)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
  • Actual
    • S(E);
    • Threat
      • QAB1(B)
    • Vars
      • K(b);S_FLIGHT::QAB1(B)
      • K(b);P_SPINP(d),S_FLIGHT,XP(D)::B(H)+S(E)
      • P(d);::QAR2(B)
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