MESON Chess Problem Database

Problem Display
PID: 161193 (3K4/1R3N2/4kp2/2b2b2/2P1rpP1/1Q6/4N3/5R2 w - - 0 1)

de Dani, A

Sunday Chronicle, 1944

(First published on Sun Mar 5 1944)

3K4/1R3N2/4kp2/2b2b2/2P1rpP1/1Q6/4N3/5R2

#2

8 + 6

14867 BCPS Library 2017
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.Sxf4#
    • 1...Rxc4
      • 2.Sxf4#
      • 2.Qxc4#
    • 1...Re5
      • 2.Sxf4#
    • 1...Bg1
      • 2.Re7#
    • 1...Bf2
      • 2.Re7#
    • 1...Be3
      • 2.Re7#
    • 1...Bd4
      • 2.Re7#
      • 2.c5#
    • 1...Bb6+
      • 2.Qxb6#
    • 1...Ba7
      • 2.Re7#
    • 1...Be7+
      • 2.Rxe7#
  • Tries
    • 1.Sd4+?
      • 1...Bxd4
        • 2.Re7#
        • 2.c5#
      • 1...Rxd4+!
    • 1.Qb5?
      • threat
        • 2.Qd7#
      • 1...Bb6+
        • 2.Qxb6#
      • 1...Be7+
        • 2.Rxe7#
      • 1...Rd4+!
    • 1.Qb6+?
      • 1...Bd6
        • 2.Re7#
        • 2.Qxd6#
      • 1...Bxb6+!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Sxf4#
      • 1...Bb6+
        • 2.Qxb6#
      • 1...Be7+
        • 2.Rxe7#
      • 1...Bxe3
        • 2.Re7#
      • 1...Bxg4
        • 2.Qxe4#
      • 1...fxe3
        • 2.gxf5#
      • 1...Bd6
        • 2.Sd4#
      • 1...f3
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::S(B),XP(b)
    • B(c);N_GUARD::R1(F)
    • B(c);CHECK,N_GUARD::QAR(C),XB(c)
    • B(c);CHECK,N_GUARD::R1(F),XB(c)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • R(a);CHECK,XS(B)
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • B(c);CHECK,N_GUARD::QAR(C),XB(c)
        • B(c);CHECK,N_GUARD::R1(F),XB(c)
      • Refutation
        • R(a);CHECK
    • Try
      • Q(C);CHECK
      • Refutation
        • B(c);CHECK,XQ(C)
  • Actual
    • Q(C);P_PINR(a)
    • Threat
      • S(B),XP(b)
    • Vars
      • B(c);CHECK,OGATE::QAR(C),XB(c)
      • B(c);CHECK,N_GUARD::R1(F),XB(c)
      • B(c);N_GUARD,N_SPINR(a),XQ(C)::R1(F)
      • B(d);N_GUARD,XP(E)::QAR2(C),XR(a)
      • P(b);N_SPINR(a),XQ(C)::P(E),XB(d)
      • B(c);N_GUARD::S(B)
      • P(b);::S(B)
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