MESON Chess Problem Database

Problem Display
PID: 204298 (b7/2prp1Q1/4R2p/qp3P1N/1B1NP3/p2pk1p1/K4p2/1R1B1r2 w - - 0 1)

Belli, Nicolo

Comm., Centurini/Guidelli MT, 1925

b7/2prp1Q1/4R2p/qp3P1N/1B1NP3/p2pk1p1/K4p2/1R1B1r2

#2

10 + 13

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Qxh6#
      • 2.Qxg3#
    • 1...Rd5
      • 2.exd5#
    • 1...Bd5+
      • 2.exd5#
    • 1...d2
      • 2.Rb3#
  • Tries
    • 1.Sb3?
      • threat
        • 2.Qxh6#
        • 2.Qxg3#
      • 1...d2
        • 2.Qxg3#
      • 1...Rg1
        • 2.Qxh6#
      • 1...g2
        • 2.Qxh6#
        • 2.Qg3#
      • 1...Rxd1!
    • 1.Bc3?
      • threat
        • 2.Qxh6#
        • 2.Qxg3#
      • 1...Bd5+
        • 2.exd5#
      • 1...d2
        • 2.Qxg3#
      • 1...Rg1
        • 2.Qxh6#
      • 1...g2
        • 2.Qxh6#
        • 2.Qg3#
      • 1...Qxc3!
  • Keys
    • 1.Bc5!
      • threat
        • 2.Qxh6#
      • 1...Qd2+
        • 2.Sc2#
      • 1...Bd5+
        • 2.Sb3#
      • 1...Kd2
        • 2.Sf3#
      • 1...d2
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(k);OGATE::R(I)+P(F),XR(k)
    • B(m);CHECK,OGATE::R(I)+P(F),XB(m)
    • P(d);OGATEB::R(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAR2(J),XP(f)
        • R(a);::QAB(J),XP(i)
      • Refutation
        • R(a);XB(B)
    • Try
      • B(D);
      • Threat
        • DUALS(2)
      • Vars
        • B(m);CHECK,OGATE::R(I)+P(F),XB(m)
        • P(d);::QAR2(J),XP(f)
        • R(a);::QAB(J),XP(i)
      • Refutation
        • Q(g);XB(D)
  • Actual
    • B(D);
    • Threat
      • QAB(J),XP(i)
    • Vars
      • Q(g);CHECK,SBLOCK::B(D)+S(E),DCHECK
      • B(m);CHECK,S_CUTR(k)::B(D)+S(E)
      • K(e);S_FLIGHT::S(E)
      • P(d);SBLOCK::QAR2(J),XP(f)
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