MESON Chess Problem Database

Problem Display
PID: 206326 (3n3Q/7p/K4B1r/n2B4/3p1kPP/1p1Rp1pP/1N4p1/R4bb1 w - - 0 1)

Pape, Edouard

L'Alfiere di Re, 1925

3n3Q/7p/K4B1r/n2B4/3p1kPP/1p1Rp1pP/1N4p1/R4bb1

#2

10 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf6+
      • 2.Qxf6#
    • 1...Bxd3+
      • 2.Sxd3#
    • 1...Sc4
      • 2.Rxd4#
    • 1...Sac6
      • 2.Bg5#
    • 1...Sdc6
      • 2.Bg5#
    • 1...Se6
      • 2.Be5#
    • 1...e2
      • 2.Rf3#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Rxd4#
      • 1...Rxf6+
        • 2.Qxf6#
      • 1...Bxd3
        • 2.Sxd3#
      • 1...Sac6
        • 2.Bg5#
      • 1...Sdc6
        • 2.Bg5#
      • 1...Se6
        • 2.Be5#
      • 1...e2
        • 2.Rf3#
      • 1...Sc4+!
    • 1.Sc4?
      • threat
        • 2.Rxd4#
      • 1...Rxf6+
        • 2.Qxf6#
      • 1...Sac6
        • 2.Bg5#
      • 1...Sdc6
        • 2.Bg5#
      • 1...Se6
        • 2.Be5#
      • 1...e2
        • 2.Rf3#
      • 1...Bxd3!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Rxd4#
      • 1...Rxf6+
        • 2.Qxf6#
      • 1...Bxd3+
        • 2.Sxd3#
      • 1...Sc4
        • 2.Rxd4#
      • 1...Sac6
        • 2.Bg5#
      • 1...Sdc6
        • 2.Bg5#
      • 1...Se6
        • 2.Be5#
      • 1...e2
        • 2.Rf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(j);CHECK,OGATE,XB(I)::QAR2(J),XR(j)
    • B(a);CHECK,XR(C)::S(B),XB(a)
    • S(i);N_PINR(C)::R(C),XP(g)
    • S(i);N_PINB(I)::B(I)
    • S(l);N_PINB(I)::B(I)
    • P(e);N_PINR(C)::R1(C)
  • Tries
    • Try
      • K(H);N_SPINR(C),P-FLIGHT
      • Threat
        • R(C),XP(g)
      • Vars
        • R(j);CHECK,OGATE,XB(I)::QAR2(J),XR(j)
        • B(a);XR(C)::S(B),XB(a)
        • S(i);N_PINB(I)::B(I)
        • S(l);N_PINB(I)::B(I)
        • P(e);OGATE::R1(C)
      • Refutation
        • S(i);CHECK
    • Try
      • S(B);N_SPINR(C)
      • Threat
        • R(C),XP(g)
      • Vars
        • R(j);CHECK,OGATE,XB(I)::QAR2(J),XR(j)
        • S(i);N_PINB(I)::B(I)
        • S(l);N_PINB(I)::B(I)
        • P(e);OGATE::R1(C)
      • Refutation
        • B(a);P_PINS(B),XR(C)
  • Actual
    • R(A);P_PINP(g)
    • Threat
      • R(A),XP(g)
    • Vars
      • R(j);CHECK,OGATE,XB(I)::QAR2(J),XR(j)
      • B(a);CHECK,XR(C)::S(B),XB(a)
      • S(i);N_PINR(C),N_SPINP(g)::R(C),XP(g)
      • S(i);N_PINB(I)::B(I)
      • S(l);N_PINB(I)::B(I)
      • P(e);N_PINR(C)::R1(C)
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